Dell S2721D/S2721DS Monitor
User’s Guide
Model: S2721D/S2721DS
Regulatory model: S2721Db
Contents
Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Connecting the stand - S2721DS . . . . . . . . . . . . . . . . . . . 30
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Connecting the HDMI and power cables . . . . . . . . . . . . . . . . . . . . 33
Connecting the DisplayPort (DP to DP) cable (optional) and power
Removing the monitor stand - S2721DS. . . . . . . . . . . . . . 38
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Product specific problems . . . . . . . . . . . . . . . . . . . . . . . . 66
FCC notices (U.S. only) and other regulatory
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Safety instructions
CAUTION: Use of controls, adjustments, or procedures other than
those specified in this documentation may result in exposure to shock,
electrical hazards, and/or mechanical hazards.
• Place the monitor on a solid surface and handle it carefully. The screen is
fragile and can be damaged if dropped or hit sharply.
• Always be sure that your monitor is electrically rated to operate with the AC
power available in your location.
• Keep the monitor in room temperature. Excessive cold or hot conditions can
have an adverse effect on the liquid crystal of the display.
• Do not subject the monitor to severe vibration or high impact conditions. For
example, do not place the monitor inside a car trunk.
• Unplug the monitor when it is going to be left unused for an extended period
of time.
• To avoid electric shock, do not attempt to remove any cover or touch the
inside of the monitor.
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Safety instructions
About your monitor
Package contents
Your monitor ships with the components shown in the table below. If any
NOTE: Some items may be optional and may not ship with your monitor.
Some features may not be available in certain countries.
NOTE: If you are connecting a stand that you purchased from any other
source, follow the set up instructions that were included with the
stand.
Component image
Component description
Display
Stand riser:
a. S2721D
b. S2721DS
Stand base:
a. S2721D
b. S2721DS
About your monitor
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VESA™ screw cover
(S2721D only)
Power cable (varies by
country)
HDMI cable
• Quick Setup Guide
• Safety, Environmental,
and Regulatory
Information
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Product features
The Dell S2721D/S2721DS monitor has an active matrix, Thin-Film Transistor
(TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor features
include:
• 68.47 cm (27 in.) viewable area (measured diagonally).
2560 x 1440 (16:9) resolution, plus full-screen support for lower resolutions.
• Supports AMD FreeSync™, with a refresh rate of 75 Hz and a rapid response
time of 4 ms gray to gray in Extreme mode*.
• Color gamut of 99% sRGB.
• Digital connectivity with DisplayPort and HDMI.
• S2721D: Tilt capability.
• S2721DS: Tilt, swivel, pivot, and height adjustment capabilities.
• Dual built-in speakers.
• Removable stand and Video Electronics Standards Association (VESA™)
100 mm mounting holes for flexible mounting solutions.
• Plug and play capability if supported by your system.
• On-Screen Display (OSD) adjustments for ease of set-up and screen
optimization.
• Power and OSD buttons lock.
• Security lock slot.
• 0.3 W in Standby mode.
• Optimize eye comfort with a flicker-free screen.
WARNING: The possible long-term effects of blue light emission from
the monitor may cause damage to the eyes, including eye fatigue,
digital eye strain, and so on. ComfortView feature is designed to reduce
the amount of blue light emitted from the monitor to optimize eye
comfort.
*The 4 ms gray-to-gray mode is achievable in the Extreme mode to reduce visible
motion blur and increased image responsiveness. However, this may introduce
some slight and noticeable visual artifacts into the image. As every system setup
and every user's needs are different, we recommend that users experiment with
the different modes to find the setting that is right for them.
About your monitor
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Identifying parts and controls
Front view
S2721D
S2721DS
Label
1
Description
Function buttons
Use
For more information, see Operating
2
Power On/Off button (with
LED indicator)
To turn the monitor on or off.
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2
Barcode, serial number, and
Service Tag label
Refer to this label if you need to
contact Dell for technical support.
The Service Tag is a unique
alphanumeric identifier that enables
Dell service technicians to identify
the hardware components in your
monitor and access warranty
information.
3
4
5
Stand release button
Regulatory label
Releases stand from the monitor.
Lists the regulatory approvals.
Cable-management slot
Use to organize cables by inserting
them through the slot.
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About your monitor
Bottom view
S2721D
Bottom view without monitor stand
S2721DS
Bottom view without monitor stand
Label
Description
Security lock slot
Use
1
Secures the monitor with security lock
(security lock not included).
2
Power connector
Connect the power cable (shipped with your
monitor).
About your monitor
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3
4
HDMI port (HDMI 1)
Connect your computer with the HDMI cable
(shipped with your monitor).
HDMI port (HDMI 2) Connect your computer with the HDMI cable
(shipped with your monitor).
5
6
DisplayPort
Connect your computer with the DisplayPort
cable.
Line-out port
Connect your speakers.
NOTE: This port does not support
headphones.
7
Speakers
Provides audio output.
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About your monitor
Monitor specifications
Model
S2721D
S2721DS
Screen type
Active matrix - TFT LCD
Panel technology
Aspect ratio
IPS
16:9
Viewable image
Diagonal
684.7 mm (27 in.)
Width (active area)
Height (active area)
Total area
596.7 mm (23.49 in.)
335.7 mm (13.21 in.)
2
2
200312.2 mm (310.30 in. )
0.2331 x 0.2331 mm
108.79
Pixel pitch
Pixel per inch (PPI)
Viewing angle
Vertical
178° (typical)
Horizontal
178° (typical)
Luminance output
Contrast ratio
Faceplate coating
350 cd/m² (typical)
1000 to 1 (typical)
Anti-Glare treatment of the front polarizer (Haze 25%,
3H)
Backlight
White LED edgelight system
Response time
8 ms gray to gray in Normal mode
5 ms gray to gray in Fast mode
4 ms gray to gray in Extreme mode*
*The 4 ms gray-to-gray mode is achievable in the
Extreme mode to reduce visible motion blur and
increased image responsiveness. However this may
introduce some slight and noticeable visual artifacts into
the image. As every system setup and every user's needs
are different, we recommend that users experiment with
the different modes to find the setting that is right for
them.
About your monitor
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Color depth
Color gamut
Connectivity
16.7 million colors
sRGB 99% (typical)
• 1 x DisplayPort version 1.2
• 2 x HDMI ports version 1.4
• 1 x audio line-out port
Border width (edge of monitor to active area)
Top
7.4 mm
Left/Right
Bottom
Adjustability
Til t
7.4 mm/7.4 mm
21.6 mm
-5° to 21°
-5° to 21°
-30° to 30°
-90° to 90°
110 mm
Swivel
Pivot
Not applicable
Not applicable
Not applicable
Height adjustable
stand
Built-in speakers
2 x 3 W sound output
Dell Display Manager Easy Arrange and other key features
compatibility
Security
Security lock slot (cable lock sold separately)
Resolution specifications
Model
S2721D/S2721DS
Horizontal scan range
Vertical scan range
Maximum preset resolution
30 kHz to 115 kHz (automatic)
48 Hz to 75 Hz (automatic)
2560 x 1440 at 75 Hz
Supported video modes
Model
S2721D/S2721DS
Video display capabilities (HDMI 480p, 480i, 576p, 576i, 720p, 1080i, 1080p,
& DisplayPort) QHD
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Preset display modes
Display mode
Horizontal
frequency frequency
Vertical
Pixel
clock
(MHz)
Sync
polarity
(Horizontal
/Vertical)
(kHz)
(Hz)
720 x 400
31.50
31.50
37.50
37.90
46.90
48.40
60.00
67.50
64.00
80.00
60.00
67.50
66.70
88.80
111.90
70.10
59.90
75.00
60.30
75.00
60.00
75.00
75.00
60.00
75.00
60.00
60.00
60.00
59.95
74.97
28.30
25.20
31.50
-/+
-/-
VESA, 640 x 480
VESA, 640 x 480
VESA, 800 x 600
VESA, 800 x 600
VESA, 1024 x 768
VESA, 1024 x 768
VESA, 1152 x 864
VESA, 1280 x 1024
VESA, 1280 x 1024
VESA, 1600 x 900
VESA, 1920 x 1080
2048 x 1080
-/-
40.00
49.50
65.00
78.80
+/+
+/+
-/-
+/+
+/+
+/+
+/+
+/+
+/+
+/-
+/-
+/-
108.00
108.00
135.00
108.00
148.50
147.18
241.50
304.25
2560 x 1440
2560 x 1440
NOTE: This monitor supports AMD FreeSync™.
Electrical specifications
Model
S2721D/S2721DS
Video input signals
HDMI 1.4/DisplayPort 1.2, 600 mV for each differential
line, 100 Ω input impedance per differential pair
AC input voltage/
frequency/current
100 VAC to 240 VAC / 50 Hz or 60 Hz 3 Hz / 1.5 A
(typical)
Inrush current
• 120 V: 30 A (Max.) at 0°C (cold start)
• 240 V: 60 A (Max.) at 0°C (cold start)
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Physical characteristics
Model
S2721D
S2721DS
Signal cable type
• Digital: HDMI, 19 pins
• Digital: DisplayPort, 20 pins (cable not supplied)
NOTE: Dell monitors are designed to work optimally with the video cables that
are shipped with your monitor. As Dell does not have control over the different
cable suppliers in the market, the type of material, connector and process used to
manufacture these cables, Dell does not guarantee video performance on cables
that are not shipped with your Dell monitor.
Dimensions (with stand)
Height
453.4 mm (17.85 in.)
• Extended:
510.1 mm (20.08 in.)
• Compressed:
400.1 mm (15.75 in.)
Width
Depth
611.6 mm (24.08 in.)
186.8 mm (7.35 in.)
611.6 mm (24.08 in.)
174.7 mm (6.88 in.)
Dimensions (without stand)
Height
364.6 mm (14.35 in.)
364.6 mm (14.35 in.)
611.6 mm (24.08 in.)
55.4 mm (2.18 in.)
Width
611.6 mm (24.08 in.)
55.4 mm (2.18 in.)
Depth
Stand dimensions
Height
176.0 mm (6.93 in.)
• Extended:
403.1 mm (15.87 in.)
• Compressed:
364.8 mm (14.36 in.)
Width
257.2 mm (10.13 in.)
186.8 mm (7.35 in.)
257.0 mm (10.12 in.)
174.7 mm (6.88 in.)
Depth
Weight
Weight with packaging
7.9 kg (17.42 lb)
5.4 kg (11.90 lb)
8.9 kg (19.62 lb)
6.2 kg (13.67 lb)
Weight with stand
assembly and cables
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About your monitor
Weight without stand
assembly (For wall mount
or VESA mount
considerations - no
cables)
4.4 kg (9.70 lb)
4.4 kg (9.70 lb)
1.5 kg (3.31 lb)
Weight of stand assembly 0.7 kg (1.54 lb)
Environmental characteristics
Model
S2721D/S2721DS
Compliant standards
• ENERGY STAR certified monitor
• RoHS-compliant
• TCO certified displays
• BFR/PVC-reduced monitor (excluding external cables)
• Arsenic-free glass and Mercury-free for the panel only
Temperature
Operating
0°C to 40°C (32°F to 104°F)
Non-operating
• Storage: -20°C to 60°C (-4°F to 140°F)
• Shipping: -20°C to 60°C (-4°F to 140°F)
Humidity
Operating
10% to 80% (non-condensing)
Non-operating
• Storage: 5% to 90% (non-condensing)
• Shipping: 5% to 90% (non-condensing)
Altitude
Operating
5,000 m (16,404 ft) (maximum)
12,192 m (40,000 ft) (maximum)
• 119.42 BTU/hour (maximum)
• 64.83 BTU/hour (typical)
Non-operating
Thermal dissipation
About your monitor
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Power management modes
If you have a VESA DPM™ compliant display card or software installed on your
computer, the monitor can automatically reduce its power consumption when not in
use. This is referred to as Standby Mode*. If the computer detects input from the
keyboard, mouse, or other input devices, the monitor automatically resumes to
function. The following table shows the power consumption and signaling of this
automatic power saving feature:
VESA
modes
Horizontal Vertical
sync sync
Active Active
Video
Power
indicator
Power
consumption
Normal
operation
Active
White
40 W
(maximum)**
19 W (typical)
Less than 0.3 W
Active-off Inactive
mode
Inactive
-
Blanked White
(breathing)
Off
Switch off
-
-
Less than 0.3 W
Power Consumption P
17.5 W
54.68 kWh
on
Total Energy Consumption (TEC)
*Zero power consumption in OFF mode can only be achieved by disconnecting the
main cable from the monitor.
**Maximum power consumption with max luminance.
This document is informational only and reflects laboratory performance. Your
product may perform differently, depending on the software, components and
peripherals you ordered and shall have no obligation to update such information.
Accordingly, the customer should not rely upon this information in making decisions
about electrical tolerances or otherwise. No warranty as to accuracy or
completeness is expressed or implied.
NOTE: This monitor is ENERGY STAR certified.
This product qualifies for ENERGY STAR in the factory
default settings which can be restored by “Factory Reset”
function in the OSD menu. Changing the factory default
settings or enabling other features may increase power
consumption that could exceed the ENERGY STAR specified
limit.
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NOTE:
P : Power consumption of On mode as defined in Energy Star 8.0
on
version.
TEC: Total energy consumption in kWh as defined in Energy Star 8.0
version.
Pin assignments
DisplayPort connector
Pin
number
20-pin side of the
connected signal cable
ML3 (n)
1
2
GND
3
ML3 (p)
ML2 (n)
GND
4
5
6
ML2 (p)
ML1 (n)
GND
7
8
9
ML1 (p)
ML0 (n)
GND
10
11
12
13
14
15
16
17
18
ML0 (p)
GND
GND
AUX (p)
GND
AUX (n)
Hot Plug Detect
About your monitor
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19
Re-PWR
20
+3.3 V DP_PWR
HDMI connector
Pin
19-pin side of the
number
connected signal cable
1
TMDS DATA 2+
2
TMDS DATA 2 SHIELD
TMDS DATA 2-
3
4
TMDS DATA 1+
5
TMDS DATA 1 SHIELD
TMDS DATA 1-
6
7
TMDS DATA 0+
8
TMDS DATA 0 SHIELD
TMDS DATA 0-
9
10
11
12
13
14
15
16
17
18
19
TMDS CLOCK+
TMDS CLOCK SHIELD
TMDS CLOCK-
CEC
Reserved (N.C. on device)
DDC CLOCK (SCL)
DDC DATA (SDA)
DDC/CEC Ground
+5 V POWER
HOT PLUG DETECT
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LCD monitor quality and pixel policy
During the LCD Monitor manufacturing process, it is not uncommon for one or more
pixels to become fixed in an unchanging state which are hard to see and do not
affect the display quality or usability. For more information on Dell Monitor Quality
Ergonomics
CAUTION: Improper or prolonged usage of keyboard may result in
injury.
CAUTION: Viewing the monitor screen for extended periods of time
may result in eye strain.
For comfort and efficiency, observe the following guidelines when setting up and
using your computer workstation:
• Position your computer so that the monitor and keyboard are directly in front
of you as you work. Special shelves are commercially available to help you
correctly position your keyboard.
• To reduce the risk of eye strain and neck/arm/back/shoulder pain from using
the monitor for long periods of time, we suggest you to:
1. Set the distance of the screen between 20 to 28 in. (50 - 70 cm) from your
eyes.
2. Blink frequently to moisten your eyes or wet your eyes with water after
prolonged usage of the monitor.
3. Take regular and frequent breaks for 20 minutes every two hours.
4. Look away from your monitor and gaze at a distant object at 20 feet away
for at least 20 seconds during the breaks.
5. Perform stretches to relieve tension in the neck, arm, back, and shoulders
during the breaks.
• Make sure that the monitor screen is at eye level or slightly lower when you
are sitting in front of the monitor.
• Adjust the tilt of the monitor, its contrast, and brightness settings.
• Adjust the ambient lighting around you (such as overhead lights, desk lamps,
and the curtains or blinds on nearby windows) to minimize reflections and
glare on the monitor screen.
• Use a chair that provides good lower-back support.
• Keep your forearms horizontal with your wrists in a neutral, comfortable
position while using the keyboard or mouse.
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• Always leave space to rest your hands while using the keyboard or mouse.
• Let your upper arms rest naturally on both sides.
• Ensure that your feet are resting flat on the floor.
• When sitting, make sure that the weight of your legs is on your feet and not on
the front portion of your seat. Adjust your chair's height or use a footrest if
necessary to maintain a proper posture.
• Vary your work activities. Try to organize your work so that you do not have to
sit and work for extended periods of time. Try to stand or get up and walk
around at regular intervals.
• Keep the area under your desk clear of obstructions and cables or power
cords that may interfere with comfortable seating or present a potential trip
hazard.
monitor screen at or
below eye level
monitor and
keyboard
positioned
directly in front
of the user
wrists relaxed
and flat
feet flat on the
floor
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Handling and moving your display
To ensure the monitor is handled safely when lifting or moving it, follow the
guidelines mentioned below:
• Before moving or lifting the monitor, turn off your computer and the monitor.
• Disconnect all cables from the monitor.
• Place the monitor in the original box with the original packing materials.
• Hold the bottom edge and the side of the monitor firmly without applying
excessive pressure when lifting or moving the monitor.
• When lifting or moving the monitor, ensure the screen is facing away from you
and do not press on the display area to avoid any scratches or damage.
• When transporting the monitor, avoid any sudden shock or vibration to it.
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• When lifting or moving the monitor, do not turn the monitor upside down while
holding the stand base or stand riser. This may result in accidental damage to
the monitor or cause personal injury.
Maintenance guidelines
Cleaning your monitor
monitor.
WARNING: Before cleaning the monitor, unplug the monitor power
cable from the electrical outlet.
For best practices, follow the instructions in the list below when unpacking,
cleaning, or handling your monitor:
• To clean your anti-static screen, lightly dampen a soft, clean cloth with water.
If possible, use a special screen-cleaning tissue or solution suitable for the
anti-static coating. Do not use benzene, thinner, ammonia, abrasive cleaners,
or compressed air.
• Use a lightly-dampened, warm cloth to clean the monitor. Avoid using
detergent of any kind as some detergents leave a milky film on the monitor.
• If you notice white powder when you unpack your monitor, wipe it off with a
cloth.
• Handle your monitor with care as a darker-colored monitor may get scratched
and show white scuff marks more than a lighter-colored monitor.
• To help maintain the best image quality on your monitor, use a dynamically
changing screen saver and turn off your monitor when not in use.
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Setting up the monitor
Connecting the stand - S2721D
NOTE: The stand is not factory-installed.
NOTE: The following instructions are applicable only for attaching the
stand that was shipped with your monitor. If you are attaching a stand
that you purchased from any other source, follow the set up
instructions that were included with the stand.
To attach the monitor stand:
1. Follow the instructions on the flaps of packaging box to remove the stand
from the top cushion that secures it.
2. Remove the VESA cover, stand base, and stand riser from the packaging
cushion.
Setting up the monitor
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3. Align and place the stand riser on the stand base.
4. Open the screw handle at the bottom of the stand base and turn it clockwise
to secure the stand assembly.
5. Close the screw handle.
6. Open the protective cover to access the VESA slot on the display.
7. Align and insert the stand assembly bracket into the groove on the back of the
display until it locks in place.
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8. Install the VESA screw cover.
9. Place the monitor in an upright position, and lift the protective cover from the
monitor.
Setting up the monitor
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Connecting the stand - S2721DS
NOTE: The stand is not factory-installed.
NOTE: The following instructions are applicable only for attaching the
stand that was shipped with your monitor. If you are attaching a stand
that you purchased from any other source, follow the set up
instructions that were included with the stand.
To attach the monitor stand:
1. Follow the instructions on the flaps of packaging box to remove the stand
from the top cushion that secures it.
2. Remove the stand base and stand riser from the packaging cushion.
3. Align and place the stand riser on the stand base.
4. Open the screw handle at the bottom of the stand base and turn it clockwise
to secure the stand assembly.
5. Close the screw handle.
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6. Open the protective cover to access the VESA slot on the display.
7. Attach the stand assembly to the display.
a. Align and slide the tabs on the stand riser into the VESA slot.
b. Press the stand down until it snaps into place.
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8. Hold the stand riser with both hands firmly and lift the monitor. Then place
the monitor in an upright position on a flat surface.
NOTE: Hold the stand riser firmly when lifting the monitor to avoid any
accidental damage.
9. Lift the protective cover from the monitor.
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Connecting your monitor
WARNING: Before you begin any of the procedures in this section,
NOTE: Dell monitors are designed to work optimally with Dell supplied
inbox cables. Dell does not guarantee the video quality and performance
when using non-Dell cables.
NOTE: Route the cables through the cable-management slot before
connecting them.
NOTE: Do not connect all cables to the computer at the same time.
NOTE: The images are for the purpose of illustration only. Appearance
of the computer may vary.
To connect your monitor to the computer:
1. Turn Off your computer and disconnect the power cable.
2. Connect the HDMI or DisplayPort cable from your monitor to the computer.
Connecting the HDMI and power cables
S2721D
S2721DS
Setting up the monitor
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Connecting the DisplayPort (DP to DP) cable (optional) and power cable
S2721D
S2721DS
Organizing your cables
S2721D
S2721DS
After attaching all necessary cables to your monitor and computer, (See
Connecting your monitor for cable attachment,) organize all cables as shown
above.
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Sꢀ etting up the monitor
Securing your monitor using Kensington lock (optional)
The security lock slot is located at the bottom of the monitor. (See Security lock
slot)
For more information on using the Kensington lock (purchased separately), see the
documentation that is shipped with the lock.
Secure your monitor to a table using the Kensington security lock.
S2721D
S2721DS
NOTE: The image is for the purpose of illustration only. Appearance of
the lock may vary.
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Removing the monitor stand - S2721D
NOTE: To prevent scratches on the LCD screen when removing the
stand, ensure that the monitor is placed on a soft, clean surface.
NOTE: The following instructions are applicable only for removing the
stand that was shipped with your monitor. If you are removing a stand
that you purchased from any other source, follow the set up
instructions that were included with the stand.
To remove the stand:
1. Place the monitor on a soft cloth or cushion.
2. Press the dimple on the VESA cover to release it from the back of the display.
3. Using a long screwdriver, push the release latch located in the gap just above
the stand.
4. Once the latch is released, slide the stand assembly away from the monitor.
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Removing the monitor stand - S2721DS
NOTE: To prevent scratches on the LCD screen when removing the
stand, ensure that the monitor is placed on a soft, clean surface.
NOTE: The following instructions are applicable only for removing the
stand that was shipped with your monitor. If you are removing a stand
that you purchased from any other source, follow the set up
instructions that were included with the stand.
To remove the stand:
1. Place the monitor on a soft cloth or cushion.
2. Press and hold the stand release button at the back of the display.
3. Lift the stand assembly up and away from the monitor.
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VESA wall mounting (optional)
S2721D
S2721DS
(Screw dimension: M4 x 10 mm).
Read the instructions that shipped with the VESA-compatible wall mounting kit.
1. Place the display on a soft cloth or cushion on a stable flat table.
3. Using a Phillips screwdriver, remove the four screws that secure the display
back cover.
4. Install the mounting bracket from the wall mounting kit to the display.
5. Mount the monitor on the wall. For more information, see the documentation
that shipped with the wall mounting kit.
NOTE: For use only with UL or CSA or GS-listed wall mount bracket
with minimum weight or load bearing capacity of 17.6 kg (S2721D/
S2721DS).
Setting up the monitor
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Operating the monitor
Power on the monitor
Press the Power button to turn On the monitor.
Using the front-panel controls
Use the control buttons on the front of the monitor to adjust settings.
The following table describes the front-panel buttons:
Front-panel button
Description
1
Use this button to choose from a list of preset color
modes.
Shortcut key/
Preset Modes
2
To directly access the Volume adjustment slider.
Shortcut key/
Volume
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3
4
5
Use the MENU button to launch the On-Screen
Menu
Exit
Use this button to exit the OSD main menu.
Use the Power button to turn the monitor On and
Off.
Power
(with power light
indicator)
The white light indicates the monitor is On and fully
functional. A breathing white light indicates Standby
mode.
Front-panel button
Use the buttons on the front of the monitor to adjust the image settings.
Front-panel button
1
Description
Use the Up button to adjust (increase ranges) items in
the OSD menu.
Up
2
Use the Down button to adjust (decrease ranges) items
in the OSD menu.
Down
3
Use the OK button to confirm your selection.
OK
4
Use the Back button to go back to the previous menu.
Back
Operating the monitor
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Using the On-Screen Display (OSD) menu
Accessing the menu system
NOTE: If you change the settings and then either proceed to another
menu or exit the OSD menu, the monitor automatically saves those
changes. The changes are also saved if you change the settings and
then wait for the OSD menu to disappear.
1. Press the
button to launch the OSD menu and display the main menu.
2. Press the
and
buttons to move between the setting options. As you
move from one icon to another, the option name is highlighted. See the
following table for a complete list of all the options available for the monitor.
3. Press the
or
or
button once to activate the highlighted option.
NOTE: The directional buttons (and the OK button) displayed may
differ according to the menu you’ve selected. Use available buttons to
make your selection.
4. Press the
and
buttons to select the desired parameter.
5. Press
to enter the submenu and then use the directional buttons,
according to the indicators on the menu, to make your changes.
6. Select the button to return to the main menu.
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Icon
Menu and
Submenus
Description
Brightness/
Contrast
Use this menu to activate Brightness/Contrast
adjustment.
Brightness
Contrast
Brightness adjusts the luminance of the backlight.
Press the
press the
button to increase the brightness and
button to decrease the brightness (min.
0 / max. 100).
Adjusts the Brightness first, and then adjust the
Contrast only if further adjustment is necessary.
Press the
button to increase the contrast and
press the
button to decrease the contrast (min. 0
/ max. 100).
The Contrast function adjusts the degree of
difference between darkness and lightness on the
monitor screen.
Operating the monitor
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Input Source
Use the Input Source menu to select between the
different video signals that may be connected to your
monitor.
DP
Select the DP input when you are using the
DisplayPort (DP) connector. Press the
confirm the selection.
button to
HDMI 1
Select the HDMI 1 input when you are using the
HDMI connector. Press the
selection.
button to confirm the
HDMI 2
Select the HDMI 2 input when you are using the
HDMI connector. Press the
selection.
button to confirm the
Auto Select
Turning on the function allows you to scan for
available input sources.
Reset Input
Source
Resets your monitor input settings to the factory
settings.
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Color
Use Color to adjust the color setting mode.
Preset Modes Allows you to choose a preset mode from the list.
• Standard: Loads the monitor's default color
settings. This is the default preset mode.
Operating the monitor
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Preset Modes • ComfortView: Decreases the level of blue light
emitted from the screen to make viewing more
comfortable for your eyes.
WARNING: The possible long-term effects of
blue light emission from the monitor may
cause personal injury ch as digital eye strain,
eye fatigue and damage to the eyes. Using
monitor for extended periods of time may
also cause pain in parts of body such as neck,
arm, back and shoulder. For more
• Movie: Loads color settings ideal for movies.
• FPS: Loads color settings ideal for First-Person
Shooter (FPS) games.
• RTS: Loads color settings ideal for Real-Time
Strategy (RTS) games.
• RPG: Loads color settings ideal for Role-Playing
Games (RPG).
• Warm: Presents colors at lower color
temperatures. The screen appears warmer with a
red/yellow tint.
• Cool: Presents colors at higher color
temperatures. The screen appears cooler with a
blue tint.
• Custom Color: Allows you to manually adjust the
color settings.
Use the arrow buttons to adjust the three colors
(R, G, B) values and create your own preset color
mode.
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Operating the monitor
Input Color
Format
Allows you to set the video input mode to:
• RGB: Select this option if your monitor is
connected to a computer (or media player) using
the DisplayPort or HDMI cable.
• YPbPr: Select this option if your media player
supports only YPbPr output.
Press the
button to confirm the selection.
Hue
This feature can shift the color of the video image to
green or purple. This is used to adjust the desired
flesh tone color. Use
'0' to '100'.
or
to adjust the hue from
NOTE: Hue adjustment is available only when you
select Movie, FPS, RTS, or RPG preset mode.
Saturation
Reset Color
This feature can adjust the color saturation of the
video image. Use
from '0' to '100'.
or
to adjust the saturation
NOTE: Saturation adjustment is available only
when you select Movie, FPS, RTS, or RPG preset
mode.
Resets your monitor’s color settings to the factory
settings.
Operating the monitor
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Display
Use the Display menu to adjust images.
Aspect Ratio
Sharpness
Adjusts the image ratio to Wide 16:9, 4:3, or 5:4.
This feature can make the image look sharper or
softer.
Use
or
to adjust the sharpness from '0' to
'100'.
Response Time Allows you to set the Response Time to Normal,
Fast, or Extreme.
Reset Display Resets all display settings to the factory preset
values.
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Audio
Volume
Allows you to set the volume level of speakers.
Use
or
to adjust the volume level from '0' to
'100'.
Speaker
Reset Audio
Menu
Allows you to enable or disable the speaker function.
Select this option to restore default audio settings.
Select this option to adjust the settings of the OSD,
such as, the languages of the OSD, the amount of
time the menu remains on screen, and so on.
Language
Sets the OSD display to one of the eight languages
(English, Spanish, French, German, Brazilian
Portuguese, Russian, Simplified Chinese, or
Japanese).
Transparency Select this option to change the menu transparency
by pressing the
100).
and
buttons (min. 0 / max.
Operating the monitor
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Timer
Lock
Sets the length of time the OSD will remain active
after the last time you pressed a button.
Use
or
to adjust the slider in 1 second
increments, from 5 to 60 seconds.
With the control buttons on the monitor locked, you
can prevent people from accessing the controls. It
also prevents accidental activation in multiple
monitors side-by-side setup.
• Menu Buttons: All Menu/function buttons
(except the Power button) are locked and not
accessible by the user.
• Power Button: Only the Power button is locked
and not accessible by the user.
• Menu + Power Buttons: Both the Menu/
function & Power buttons are locked and not
accessible by the user.
The default setting is Disable.
Alternative Lock Method [for Menu/function
buttons]: You can also press and hold the Menu/
function button next to the Power button for 4
seconds to set the lock options.
NOTE: To unlock the button(s), press and hold the
Menu/function button next to the Power button for
4 seconds.
Reset Menu
Resets all OSD settings to the factory preset values.
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Personalize
Shortcut Key 1 Allows you to choose a feature from Preset Modes,
Brightness/Contrast, Input Source, Aspect
Ratio, or Volume and set it as a shortcut key.
Shortcut Key 2
Power Button Allows you to set the power LED indicator on or off
LED
to save energy.
Reset
Resets all settings under the Personalize menu to
Personalization the factory preset values.
Operating the monitor
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Others
Select this option to adjust the OSD settings, such as
DDC/CI, LCD Conditioning, and so on.
Display Info
DDC/CI
Displays the monitor's current settings.
DDC/CI (Display Data Channel/Command Interface)
allows your monitor parameters (brightness, color
balance, and etc.) to be adjustable via the software
on your computer. You can disable this feature by
selecting Off. Enable this feature for best user
experience and optimum performance of your
monitor.
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LCD
Conditioning
Helps reduce minor cases of image retention.
Depending on the degree of image retention, the
program may take some time to run. You can enable
this feature by selecting On.
Firmware
Displays the firmware version of your monitor.
Service Tag
Displays the service tag of your monitor. This string is
required when you look for phone support, check
your warranty status, update drivers on Dell's
website, etc.
Reset Others Resets all settings under the Others menu to the
factory preset values.
Factory Reset Restore all preset values to the factory default
settings. These are also the settings for ENERGY
®
STAR tests.
Operating the monitor
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OSD warning message
When the monitor does not support a particular resolution mode, you will see the
following message:
This means that the monitor cannot synchronize with the signal that it is receiving
frequency ranges addressable by this monitor. Recommended mode is 2560 x 1440.
NOTE: The message may be slightly different according to the
connected input signal.
You will see the following message before the DDC/CI function is disabled:
You will see the following message before the Lock function is activated:
NOTE: The message may be slightly different according to the selected
settings.
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When the monitor goes into Standby mode, the following message appears:
NOTE: The message may be slightly different according to the
connected input signal.
The OSD functions only in the normal operation mode. If you press any button other
than the power button during the Standby mode, the following message will appear
depending on the selected input:
NOTE: The message may be slightly different according to the
connected input signal.
If either HDMI or DisplayPort input is selected and the corresponding cable is not
connected, a floating dialog box as shown below appears.
NOTE: The message may be slightly different according to the
connected input signal.
Operating the monitor
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When Factory Reset is selected, the following message appears:
Setting the maximum resolution
To set the maximum resolution for the monitor:
®
®
®
In Windows 7, Windows 8, and Windows 8.1:
®
®
1. For Windows 8 and Windows 8.1 only, select the Desktop tile to switch to
classic desktop.
2. Right-click on the desktop and click Screen Resolution.
3. Click the dropdown list of the Screen Resolution and select 2560 x 1440.
4. Click OK.
®
In Windows 10:
1. Right-click on the desktop and click Display settings.
2. Click Advanced display settings.
3. Click the dropdown list of Resolution and select 2560 x 1440.
4. Click Apply.
If you do not see 2560 x 1440 as an option, you may need to update your graphics
driver. Depending on your computer, complete one of the following procedures:
If you have a Dell desktop or portable computer:
the latest driver for your graphics card.
If you are using a non-Dell computer (portable or desktop):
• Go to the support site for your computer and download the latest graphic
drivers.
• Go to your graphics card website and download the latest graphic drivers.
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Using the tilt, swivel, and vertical extension
NOTE: The following instructions are applicable only for attaching the
stand that was shipped with your monitor. If you are attaching a stand
that you purchased from any other source, follow the set up
instructions that were included with the stand.
With the stand attached to the monitor, you can adjust the monitor for the most
comfortable viewing angle.
Til t
S2721D
S2721DS
NOTE: The stand is not installed at the factory when shipped.
Swivel (S2721DS only)
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Vertical extension (S2721DS only)
NOTE: The stand extends vertically up to 110 mm. The figure below
illustrates how to extend the stand vertically.
Rotating the display (S2721DS only)
Before you rotate the display, ensure it is completely extended vertically and
completely tilted up to avoid hitting the bottom edge of the monitor.
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Rotate clockwise
Rotate counterclockwise
NOTE: To use the Display Rotation function (Landscape versus Portrait
view) with your Dell computer, you require an updated graphics driver
that is not included with this monitor. To download the graphics driver,
Drivers for latest driver updates.
NOTE: In the Portrait mode, you may experience performance
degradation when using graphic-intensive applications such as 3D
gaming.
Operating the monitor
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Adjusting the rotation display settings of your system
After you have rotated your monitor, you need to complete the procedure below to
adjust the Rotation Display Settings of your system.
NOTE: If you are using the monitor with a non-Dell computer, you need
to go the graphics driver website or your computer manufacturer
website for information on rotating the 'contents' on your display.
To adjust the Rotation Display Settings:
1. Right-click on the desktop and click Properties.
2. Select the Settings tab and click Advanced.
3. If you have an ATI graphics card, select the Rotation tab and set the
preferred rotation.
4. If you have an NVIDIA graphics card, click the NVIDIA tab, in the left-hand
column select NVRotate, and then select the preferred rotation.
®
5. If you have an Intel graphics card, select the Intel graphics tab, click
Graphic Properties, select the Rotation tab, and then set the preferred
rotation.
NOTE: If you do not see the rotation option or it is not working
for your graphics card.
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Troubleshooting
WARNING: Before you begin any of the procedures in this section,
Self-test
Your monitor provides a self-test feature that allows you to check whether your
monitor is functioning properly. If your monitor and computer are properly
connected but the monitor screen remains dark, run the monitor self-test by
performing the following steps:
1. Turn Off both your computer and the monitor.
2. Unplug the video cable from the computer.
3. Turn On the monitor.
The floating dialog box should appear on-screen (against a black background), if the
monitor cannot sense a video signal and is working correctly. While in self-test
mode, the power LED remains white. Also, depending upon the selected input, one
of the dialogs shown below will continuously scroll through the screen.
or
4. This box also appears during normal system operation, if the video cable
becomes disconnected or damaged.
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5. Turn Off your monitor and reconnect the video cable; then turn On both your
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check
your video controller and computer, because your monitor is functioning properly.
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the screen
abnormality you are experiencing is an inherent problem with your monitor, or with
your computer and video card.
To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the
screen).
2. Press and hold Button 4 for about 4 seconds until a pop menu appears.
3. Use Button 1 or Button 2 to select the diagnostic tool
and use Button 3
to confirm. A gray test pattern appears at the beginning of the diagnostic
program.
4. Carefully inspect the screen for abnormalities.
5. Press Button 1 again to change the test patterns.
6. Repeat steps 4 and 5 to inspect the display in red, green, blue, black, white,
and text screens.
7. Press Button 1 to end the diagnostic program.
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roubleshooting
Common problems
The following table contains general information about common monitor problems
you might encounter and the possible solutions:
Common
What you
Possible solutions
symptoms
experience
No Video/Power No picture
LED off
• Ensure that the video cable
connecting the monitor and the
computer is properly connected and
secure.
• Verify that the power outlet is
functioning properly using any other
electrical equipment.
• Ensure that the power button is
pressed fully.
• Ensure that the correct input source is
No Video/Power No picture or no
• Increase brightness & contrast
controls via OSD.
LED on
brightness
• Perform monitor self-test feature
check.
• Check for bent or broken pins in the
video cable connector.
• Run the built-in diagnostics.
• Ensure that the correct input source is
Poor Focus
Picture is fuzzy,
• Eliminate video extension cables.
blurry, or ghosting
• Reset the monitor to factory settings.
• Change the video resolution to the
correct aspect ratio.
Shaky/Jittery
Video
Wavy picture or
fine movement
• Reset the monitor to factory settings.
• Check environmental factors.
• Relocate the monitor and test in
another room.
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63
Missing Pixels
LCD screen has
spots
• Cycle power On-Off.
• Pixel that is permanently Off is a
natural defect that can occur in LCD
technology.
• For more information on Dell Monitor
Quality and Pixel Policy, see Dell
support site at: www.dell.com/
Stuck-on Pixels
LCD screen has
bright spots
• Cycle power On-Off.
• Pixel that is permanently off is a
natural defect that can occur in LCD
technology.
• For more information on Dell Monitor
Quality and Pixel Policy, see Dell
support site at: www.dell.com/
Brightness
Problems
Picture too dim or • Reset the monitor to factory settings.
too bright
• Adjust brightness & contrast controls
via OSD.
Geometric
Distortion
Screen not
centered correctly
• Reset the monitor to factory settings.
• Adjust horizontal & vertical controls
via OSD.
• When using HDMI/DisplayPort input,
the positioning adjustments are not
available.
Horizontal/
Screen has one or • Reset the monitor to factory settings.
Vertical Lines
more lines
• Perform monitor self-test feature
check and determine if these lines are
also in self-test mode.
• Check for bent or broken pins in the
video cable connector.
• Run the built-in diagnostics.
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Troubleshooting
Synchronization
Problems
Screen is
scrambled or
appears torn
• Reset the monitor to factory settings.
• Perform monitor self-test feature
check to determine if the scrambled
screen appears in self-test mode.
• Check for bent or broken pins in the
video cable connector.
• Restart the computer in the safe
mode.
Safety Related
Issues
Visible signs of
smoke or sparks
• Do not perform any troubleshooting
steps.
• Contact Dell immediately.
Intermittent
Problems
Monitor
malfunctions on &
off
• Ensure that the video cable
connecting the monitor to the
computer is connected properly and is
secure.
• Reset the monitor to factory settings.
• Perform monitor self-test feature
check to determine if the intermittent
problem occurs in self-test mode.
Missing Color
Picture missing
color
• Perform monitor self-test feature
check.
• Ensure that the video cable
connecting the monitor to the
computer is connected properly and is
secure.
• Check for bent or broken pins in the
video cable connector.
Wrong Color
Picture color not
good
• Change the settings of the Preset
Modes in the Color menu OSD
depending on the application.
• Adjust R/G/B value under Custom
Color in the Color menu OSD.
• Run the built-in diagnostics.
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65
Image retention
from a static
image left on the image displayed
monitor for a long appears on the
Faint shadow
from the static
• Use the Power Management feature
to turn Off the monitor at all times
when not in use (for more information,
period of time
screen
• Alternatively, use a dynamically
changing screensaver.
Product specific problems
Common
What you
Possible solutions
symptoms
experience
Screen image is too Image is centered • Check the Aspect Ratio setting in the
small
on screen, but
does not fill entire
viewing area
Display menu OSD.
• Reset the monitor to factory settings.
Cannot adjust the OSD does not
• Turn Off the monitor, unplug the power
cord, plug it back, and then turn On
the monitor.
monitor with the
buttons on the
front panel
appear on the
screen
• The OSD menu may be locked. Press
and hold the Menu/function button
next to the Power button for 4
seconds to unlock (for more
No Input Signal
when user controls LED light is white
are pressed
No picture, the
• Check the signal source. Ensure the
computer is not in the power saving
mode by moving the mouse or pressing
any key on the keyboard.
• Check whether the signal cable is
plugged in properly. Re-plug the signal
cable if necessary.
• Reset the computer or video player.
The picture does
not fill the entire
screen
The picture cannot • Due to different video formats (aspect
fill the height or
ratio) of DVDs, the monitor may display
in full screen.
width of the screen
• Run the built-in diagnostics.
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roubleshooting
Speakers Specific Problems
Common
What you
Possible solutions
symptoms
experience
No sound coming Cannot hear any
from the speakers sound
• Turn Off the monitor, unplug the
monitor power cord, replug it, and then
turn On the monitor.
• Check the audio cable connection is
connected correctly to the audio line-
out port of the computer.
• Unplug the audio cable from the audio
line-out port.
• Reset the monitor to factory settings.
Troubleshooting
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Appendix
WARNING: Safety instructions
WARNING: Use of controls, adjustments, or procedures other than
those specified in this documentation may result in exposure to shock,
electrical hazards, and/or mechanical hazards.
For information on safety instructions, see Safety, Environmental, and Regulatory
Information (SERI).
FCC notices (U.S. only) and other regulatory information
For FCC notices and other regulatory information, see the regulatory compliance
Contact Dell
For customers in the United States, call 800-WWW-DELL (800-999-3355).
NOTE: If you do not have an active Internet connection, you can find
contact information on your purchase invoice, packing slip, bill, or Dell
product catalog.
Dell provides several online and telephone-based support and service
options. Availability varies by country and product, and some services may
not be available in your area.
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Appendix
|
