LPDG705A
LPDG705AE
LPDG708A
LPDG708AE
5-/8-Port 10/100/Gigabit Switch with 1 PoE PD Port
Expand the number of Gigabit Ethernet ports
on your network without the need for a power
outlet.
Includes a built-in IEEE 802.3af Power Device (PD).
Unit is palm-sized with metal case.
Auto-negotiates port speed.
Includes auto-MDI/MDI-X function for every port.
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Chapter 1: Introduction
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
1. Introduction
These switches provide (5) or (8) 10-/100-/1000-Mbps ports. They were designed for easy installation and high
performance in environments where traffic on the network and the number of users increases continuously.
Both switches have a built in Power Device (PD) feature on port 1. Using this port, you can power the switch from a PSE
port over ordinary CAT5 cables.
The small compact unit was specifically designed for small to medium workgroups. Install it where space is limited for
smooth network migration and an easy upgrade to network capacity.
2. Key Features
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ꢀ
5-/8-Port 10/100/1000 Mbps (Auto-negotiation) Switch
Ports 5/8 have a built in IEEE 802.3af Power Device (PD) feature that allows the switch to get power from a PSE
device over ordinary CAT5 cables.
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Unit is palm-sized with metal case
Auto-detects full-/half-duplex modes for any port
Offers dedicated full-duplex 2000-Mbps bandwidth
Supports Store-and-Forward switching methods
Includes IEEE 802.3x flow control for full-duplex and back-pressure flow control for half-duplex
Provides non-blocking and non-head-of-line blocking full wire speed forwarding
Supports Auto-MDI/MDI-X function for any port
3. Package Contents
Your package should include the following items. If anything is missing or damaged, please contact Black Box Technical
Support at 724-746-5500 or [email protected].
ꢀ (1) Gigabit Ethernet Switch
ꢀ (1) Power Adapter: 120 VAC, 60 Hz U.S. plug for LPDG705A and LPDG708A; 100-240 VAC, 50–60 Hz, 0.4 A
universal power supply with (2) power clips: (1) EU, (1) UK for LPDG705AE and LPDG708AE
ꢀ (1) User’s Manual
Page 3
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5-/8-Port 10-/100-/Gigabit Switch with 1 PoE PD port
4. Front & Rear Panel
Front Panel
Figure 4-1. Front panel of the LPDG708A.
NOTE: The front panel of the LPDG705A is similar to the LPDG708A, except that is has six LEDs (1 power, 5 Link/Act)
instead of eight LEDs. LED 5 on LPDG705A and LED 8 on the LPDG708A indicate the Link/Act status of the PoE port.
LED Indicators on the switch
LED
Status
Description
Power
On
Power is on.
Off
Power is off.
LINK/ACT
On
Off
Port is for connection.
No connection.
Flashing
Data is transmitting or receiving
Rear Panel (Connections)
Port 5 on the LPDG705A also functions as a PoE port.
Port 8 on the LPDG708A also functions as a PoE port.
Figure 4-2. Back panels of the LPDG705A and LPDG708A.
Page 4
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Chapter 5: Connection
5. Connection
TP Port and Cable Installation:
1. The switch’s TP ports support MDI-/MDI-X auto-crossover, so you can use either straight through or cross over cables.
2. Use CAT5 or higher grade RJ-45 TP cable for 10/100 applications and CAT5e grade RJ-45 TP cable or above for
gigabit Ethernet applications, to connect a TP port of the switch to an Ethernet device such as a workstation or a server.
3. Repeat the above steps, as needed, for each RJ-45 port to be connected to a 10-/100-/1000-Mbps TP device.
For successful installation and good performance, follow the cabling requirements. Using cables with a lower
specification than recommended will negatively impact network performance. For Fast Ethernet TP network connection,
you must use CAT5 or higher cables that are up to 328 feet (100 meters) long. For Gigabit TP network connections, you
must use CAT5e or higher cables that are up to 328 feet (100 meters) long.
Power On:
Power this switch from PoE PSE (Power Source Equipment) or from external DC power adapter. When connecting a PoE
PSE, make sure that your PSE complies with 802.3af or 48 VDC 15.4 W.
After the power is on, all LED indicators will light immediately. Then all LEDs will turn off, except for the power LED, which
stays on.
Page 5
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5-/8-Port 10-/100-/Gigabit Switch with 1 PoE PD port
6. Technical Specifications
IEEE 802.3af
IEEE 802.3 10BaseT
Standards
Features
IEEE 802.3u 100BaseTX
IEEE 802.3ab 1000BaseT
IEEE 802.3x Flow control
Number of Ports: LPDG705A: (5) 10-/100-/1000BASE-T(X) with 1 PD
(PoE) Port
LPDG708A: (8) 10-/100-/1000BASE-T(X) with 1 PD (PoE) Port
MAC Address: 2K
Buffer Memory: 1M bits
Method: Store and Forward
1000-Mbps port : 1,488,000 pps
100-Mbps port : 148,800pps
10-Mbps: 14,880pps
Filtering/
Forwarding Rates
10BASE-T CAT3, 4, 5 UTP/STP
100BASE-TX CAT5, 5e, 6 UTP/STP
1000BASE-T CAT5e, 6 UTP/STP
Per Port: LINK/ACT
Transmission Media
LED Indicators
Per Unit: Power
LPDG705A, LPDG708A: Input: 120 VAC, 60 Hz with U.S. plug,
Output: 5 VDC, 2 A, 10 W max.;
LPDG705AE, LPDG708AE: Input: 100-240 VAC, 50–60 Hz, 0.4 A,
universal power supply with (2) power clips: (1) EU, (1) UK,
Output: 5 VDC, 2 A, 10 W max.
6 Watts (Maximum)
Power Supply
Power Consumption
Dimensions
Weight
0.9”H x 3”W x 5.2”D (2.4 x 7.7 x 13 cm)
0.28 kg
Operating Temperature
Storage Temperature
Humidity
32 to 104° F(0 to 40° C)
-4 to 194° F (-20 to 90 C)
10 to 90% relative humidity (non-condensing)
FCC Class A, CE
Certifications
Page 6
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LPDG705A, rev. 3
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