Wireless 11ac Dual Band USB Adapter AC1200UBE
User Manual
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Wireless 11ac Dual Band USB Adapter
AC1200UBE
User Manual
APPENDIX B: FAQ.....................................................................................................................................43
APPENDIX C: GLOSSARY........................................................................................................................45
Thank you for purchasing this Rosewill Networking product. At Rosewill we believe that excellence is
a standard. Our customers deserve nothing less than the best. By purchasing a Rosewill product you
are choosing exceptional value, unrivaled customer service and top quality hardware. If you have any
questions please feel free to contact us. We’d love to hear from you and thank you for your support!
Support: [email protected]
Call Center: (800) 575-9885
FAX: (626) 271-9504
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice.
is a registered trademark of Rosewill Inc. Other
brands and product names are trademarks or registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make any derivative
such as translation, transformation, or adaptation without permission from Rosewill Inc. Copyright © 2010
Rosewill Inc. All rights reserved.
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Safety Information:
In order to keep the safety of users and your properties, please follow the following safety
instructions:
1. This USB wireless network card is designed for indoor use only. DO NOT expose this
network card to direct sun light, rain, or snow.
2. DO NOT put this network card at or near hot or humid places, like kitchen or bathroom. Also,
do not left this wireless network card in the car in summer.
3. This network card is small enough to put in a child’s mouth, and it could cause serious injury
or could be fatal. If they throw the network card, the card will be damaged. PLEASE KEEP
THIS NETWORK CARD OUT THE REACH OF CHILDREN!
4. This network card will become hot when being used for long time (This is normal and is not
a malfunction). DO NOT put the network card on a paper, cloth, or other flammable objects
after the network card has been used for a long time.
5. There’s no user-serviceable part inside the network card. If you found that the network card is
not working properly, please contact your dealer of purchase and ask for help. DO NOT
disassemble the network card by yourself, warranty will be void.
6. If the network card falls into water, DO NOT USE IT AGAIN BEFORE YOU SEND THE
CARD TO THE DEALER OF PURCHASE FOR INSPECTION.
7. If you smell something strange or even see some smoke coming out from the network card,
switch the computer off immediately, and call dealer of purchase for help.
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Wireless 11ac Dual Band USB Adapter
AC1200UBE
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Chapter 1 Overview
Thank you for purchasing Roswell’s Wireless 11ac Dual Band USB adapter - AC1200UBE. This
is an extremely high-speed 802.11 a/b/g/n/ac dual band wireless network USB Adapter. This
wireless network adapter is transferring data at a transfer rate of 300Mbps at 2.4GHz or
867Mbps at 5GHz.
AC1200UBE with an easy-to-install USB 3.0 interface and Adjustable foldable antenna for
optimum Wi-Fi performance, setting up this wireless adapter will be just as easy!
1.1 Package Content
Before getting started, please verify that your package includes the following items:
1. Rosewill AC1200UBE Wireless 11ac Dual Band USB Adapter x 1
2. Quick Installation Guide x 1
3. Resource CD x 1, including:
Wireless Utility and Driver
User Manual
Quick installation guide x 1
Note:
Make sure that the package contains the above items. If any of the listed items are damaged or missing, please contact with
your distributor.
1.2 System Requirement
You must have at least the following
A desktop PC or Notebook with An empty USB 3.0 port (May not be able work with USB 1.1
port, performance will be greatly reduced)
At least a 300MHz processor and 32MB of memory
Windows OS for Windows XP, Vista, Windows 7, and Windows 8; MAC OS 10.4 ~ 10.8;
Linux Kernel 2.6.18~3.6.6.
At least 100MB of available disk space
A CD-ROM Drive
An 802.11ac, 802.11n, 802.11g or 802.11a/b Wireless (and Dual Band) Access
Point/Router (for infrastructure Mode) or another 802.11ac, 802.11n, 802.11g or 802.11b
wireless (and Dual Band) adapter (for Ad-Hoc; Peer-to-Peer networking mode).
1.3 Features
IEEE 802.11a/b/g/n/ac compatible.
Extreme High transfer data rate – 11ac up to 867Mbps or 11n up to 300Mbps
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Support WMM wireless QoS feature.
Support 64/128-bit WEP, WPA, WPA2 with IEEE 802.1x functions for high level of security.
Support the most popular operating system: Windows XP/Vista/7/8; MAC OS 10.4~10.8;
Linux Kernel 2.6.18~3.6.6.
Support WPS (Wi-Fi Protected Setup) hardware button for easy connection.
Support USB 3.0/2.0 interface. (11ac mode use USB 3.0 is required )
Foldable Antenna design for optimum Wi-Fi performance
1.4 LED Status
This USB Adapter contains one LED. Please refer to the following description for LED definition.
LED Name
Power/
Light Status
Off
Description
1. No wireless network adapter is installed 2.Radio off mode.
Activity/
WPS
On
1. Wireless network adapter is normally installed
2. Radio on mode.
Blinking
1. Transferring or receiving data.
2. Slow Blinking one time per seconds means WPS is
activated. The network adapter will wait for 2 minutes to
establish WPS connection.
3. Fast Blinking 30 seconds, then Solid light 15 seconds,
means WPS connection is established successfully.
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Chapter 2 Installation Guide
2.1 Hardware Diagram
1. USB Connector
2. Foldable External Wireless Antenna
3. Link/Activity LED
4. WPS Button (Press to activate WPS pairing mode)
2.2 11ac Dual Band Wireless Adapter Driver and Utility
Installation
Please follow the following instructions to install your new wireless network card:
Insert the USB wireless network card into an empty USB 3.0 port of your computer when
computer is switched on. Never use force to insert the card, if you feel it’s stuck, flip the card over
and try again.
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To use wireless network, you have to connect to a wireless access point first. You can either use
Realtek utility (comes with network adapter driver), or Windows Zero Config utility (comes with
Windows operating system).
2.2.1 Using Realtek Utility
1. Insert device driver CDROM into the CD/DVD ROM drive of your computer, and execute
“Setup.exe” program in “Driver” folder.
2. The following message will appear
on your computer, click “Close”.
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3. Insert device driver CD-ROM into
the CD/DVD ROM drive of your
computer. Select “Driver/Utility
Installation” to install the software
program.
4. Then Click “Next” to continue.
Installation procedure needs few
minutes to complete, please be
patient.
5. Click “Finish” to restart your
computer to complete installation
procedure. If you don”t want to
restart computer now, select “No, I
will restart my computer later”
option and click “Finish”.
6. Please note you have to restart
your computer before you can use
your new USB wireless network
adapter.
Connect to Wireless Access Point
Using Configuration Utility to Connect to Wireless Access Point:
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1. After installation is complete,
wireless configuration utility will be
shown in the desktop of your
computer automatically. You will
also see an icon at the bottom-right
corner of your windows system.
You can click the icon by right
mouse key, and select the
configuration utility you want to
use.
2. Wireless utility will appear. Click
“Available Network” tab to search
for wireless access points nearby.
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3. Please wait for a while, and all
wireless access points which can
be reached by this wireless
network adapter will be displayed
here.
4. Please select the access point you
want to connect, and then double
click on it or click “Add to Profile”.
5. If the wireless access point you
want to connect does not show
here, please click “Refresh”.
6. If a password (Network Key) is
required to access the wireless
access point, please enter it in
“Network key” (and enter it again
in “Confirm network key” for
confirmation). Click “OK” when
password is properly inputted.
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7. The network adapter will attempt to
connect to access point now, this
may require few seconds to
minutes, please be patient. When
the “Status” become “Associated”
in “General” tab, your computer is
connected to access point you
selected. Click “Close” to close
configuration menu.
NOTE: If you insert the USB wireless
network adapter into an USB 3.0 port
and connect to an 11ac AP, device
driver will perform an auto USB mode
switch and shown the message as
below photo, or you will heard sounds
of USB insert or unplug, this is the
normal states.
2.2.2 Using Windows Zero Configuration
Windows XP and Vista has a built-in wireless network configuration utility, called as “Windows
Zero Configuration” (WZC). You can also use WZC to configure your wireless network
parameter:
1. Right-click Realtek configuration utility icon, and click “Open Config Utility”.
2. Check “Windows Zero Config” box.
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3. A message indicating that you have been switched to Windows Zero Configuration mode will
appear. Click “OK” to continue.
NOTE: To return to use Realtek utility, uncheck “Windows Zero Config” box.
4. Click “Start” button (should be located at the bottom-left corner of windows desktop), click
“Control Panel”, then click “Network and Internet Connections” in Control Panel.
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5. Double click “Network Connections”.
6. Right-click “Wireless Network Connection” (it may have a number as suffix if you have
more than one wireless network adapter, please make sure you right-click the “Realtek
8812AU Wireless LAN 802.11ac USB NIC”, then select “View Available Wireless
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Networks”.
7. All wireless access points in proximity will be displayed here. If the access point you want to
use is not displayed here, please try to move your computer or notebook closer to the access
point, or you can click “Refresh network list” to rescan access points. Click the access point
you want to use if it”s shown, then click “Connect”.
8. If the access point is protected by encryption, you have to input its security key or passphrase
here. It must match the encryption setting on the access point.
If the access point you selected does not use encryption, you will not be prompted for
security key or passphrase.
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9. If you can see “Connected” message, the connection between your computer and wireless
access point is successfully established.
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2.3 Connection Profile Management
If you need to connect to different wireless access points at different time, like of access point of
your home, office, internet cafe, or public wireless service, you can store the connection
parameters (encryption, passphrase, security etc, etc.) as a profile for every access point, so you
don’t have to input these parameters every time when you want to connect to a specific wireless
access point.
To manage profiles, right-click the Realtek configuration utility icon located at lower-right corner
of computer desktop, then click “Open Config Utility”.
Click the “Profile” menu.
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2.3.1 Add a new profile
By this function you can setup the connection parameters for a specific wireless access point in
advance, without contacting it first.
If you want to create a new profile, click “Profile” menu, then click “Add” button.
You’ll be prompted to input connection parameters for the wireless access point you wish to
connect:
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Required parameters are:
Profile name
You can give a name to this profile, so you can remember its purpose
easily. It can be any phrase to help you remember.
Network Name (SSID)
The SSID (Service Set Identifier, i.e. access point’s name). This must
be identical with the SSID of the access point you wish to connect.
Check this box if you wish to connect to another computer / network
device by ad hoc method. When not accessing to wireless access
point, you have to check this box.
This is a
Computer-to-computer
(ad hoc) network
Channel
Select wireless channel for ad hoc connection. This option only
appears when you are using ad hoc connection.
Network Authentication
Select the network authentication type from drop-down menu. This
setting must be identical with the setting of wireless access point you
with to connect.
Data encryption
Select the data encryption type from drop-down menu. This setting
must be identical with the setting of wireless access point you with to
connect.
ASCII / PASSPHRASE
When the encryption type is “WEP”, it’s required to input a set of
“passphrase” to connect to wireless access point. Check “ASCII” or
“PASSPHRASE” depends on the security setting of access point, and
input it in the box; if you select “PASSPHRASE” you also need to
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select the length of the key.
The passphrase must be identical with the setting of wireless access
point you with to connect.
Key index
Select WEP key index. For most of access points you can select “1”,
but please refer to the setting of the access point.
Network key / Confirm
network key
When the encryption type is “WPA” or “WPA2-PSK”, it’s required to
input a set of “passphrase” to connect to wireless access point.
Please input the same passphrase in two boxes for confirmation.
When authentication type is any of 802.1X, you have to select EAP
type, tunnel, and provision mode from dropdown menu. This setting
must be identical with your 802.1x authentication server.
Please input 802.1x related authentication information here.
EAP TYPE / Tunnel /
Provision Mode
Username / Identity /
Domain / Password
Certificate
If certification is required to authenticate with 802.1x authentication
server, please select a local certificate from dropdown list.
Check this box and PAC (Privilege Access Certificate) will be
automatically selected.
PAC
When all required parameters are set, click “OK” to create and save a new profile.
2.3.2 Remove an existing profile
When you no longer need an existing profile, you can remove it.
If you want to remove a profile, click “Profile” menu, then select an existing profile which you
wish to remove, and then click “Remove” button.
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2.3.3 Edit an existing profile
If you have added a profile before, and you wish to change the content of the profile, you can use
this function. Please select a profile from the list first, then click “Edit” button. You’ll be provided
with the contents of selected profile, and you can edit them. Click “OK” to save changes, or click
“Cancel”.
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2.3.4 Make a copy of existing profile
If you need to make a copy of a specific profile, you can use this function. This function is very
convenient when you need to build a new profile which parameters are similar to any existing
profile.
To do this, select an existing profile, then click “Duplicate” button.
You’ll be prompted to input a profile name, please use an identical name that does not exist in
profile list.
2.3.5 Set as default profile
If you wish to use a specific profile as default connection, you can select a profile in the list, and
click “Set Default”. Selected profile will become default selection and Realtek configuration utility
will attempt to connect to selected access point.
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2.4 Network Statistics, General Information, and Status
The configuration utility provides information about network statistics and link status. If you want
to know how your wireless network adapter works, you can use these functions to get detailed
information about the wireless connection you’re using.
2.4.1 General Information
If you want to know the general information of the access point you’re connecting to, click
“General” menu:
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All general information like signal strength and link quality will be displayed here. This information
is very useful when you encounter some problem on connecting to access point.
If you wish to get a new IP address from DHCP server, you can click “ReNew IP” button.
2.4.2 Status
If you want to know the status of your wireless network adapter, click “Status” menu:
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2.4.3 View Network Statistics
To view the statistical data of wireless network adapter, click “Statistics” menu, and the statistics
of wireless connection will be displayed:
All connection-related statistics is displayed here. You can click “Reset” button, to reset the
statistics of all items back to 0.
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2.5 Miscellaneous Settings
There are few functions provided by Realtek configuration utility, you can access these functions
from the bottom of configuration menu:
The descriptions of these functions are listed as follow:
Show Tray Icon
Check this box to show an icon on system tray.
HERE!
Uncheck this box to hide it.
Radio Off
Switch wireless radio off. Wireless network functionalities are
disabled.
Disable Adapter
Windows Zero Config
Disable wireless network adapter. All functionalities of configration
menu will disappear. To resume, unckeck “Disable Adapter”.
Use Windows Zero Configuration to manage wireless connections.
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2.6 Establish secure connection with AP by WPS
Wi-Fi Protected Setup (WPS) is the latest wireless network technology which makes wireless
network setup become very simple. If you have WPS-enabled wireless access point, and you
want to establish a secure connection to it, you don’t have to configure the wireless access point
and setup data encryption by yourself. All you have to do is to go to the WPS setup page of this
wireless adapter, click a button, and then press a specific button or enter a set of 8-digit code on
the wireless access point you wish to establish a secure connection - just three simple steps!
For older wireless access points, it’s possible to perform a firmware upgrade to become a
WPS-enabled access point. Since they may not have a hardware button to press for WPS setup,
you can use an alternative WPS setup method - input the pin code. Every WPS-compatible
wireless network adapter support pin code configuration method; you can just input the code to
wireless access point, and the wireless access point and wireless network adapter will do the
rest for you.
This wireless network adapter is compatible with WPS. To use this function, the wireless access
point you wish to connect to must support WPS function too. Now, please follow the following
instructions to establish secure connection between WPS-enabled wireless access point and
your wireless network adapter.
This wireless network adapter supports 2 kinds of WPS: PIN code and Push-Button.
Please follow the following instructions to setup WPS:
1. Right-click Realtek configuration utility icon, and click “Open Config Utility”.
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2. Click “Wi-Fi Protect Setup” menu.
3. You can use PIN code or Push-Button configuration, and WPS-compatible wireless access
point must use the same type of WPS. For instructions on setup each type of WPS, see next
2 chapters for detailed instructions.
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2.6.1 PIN Code
To use PIN Code, please click “Pin Input Config (PIN)” button:
You’ll be prompted to select an access point you wish to connect. If you know its SSID, click
“Yes”, otherwise click “No”.
If you select “Yes”, a list of all WPS-compatible AP nearby will be displayed; you can click
“Refresh” to rescan, then select an AP and click “Select” button.
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If you select “No”, wireless network adapter will prompt you to enter 8-digit PIN code into your AP,
without selecting an AP in advance.
After you select “Yes” or “No” in previous step, network adapter will attempt to connect to
WPS-compatible AP, and an 8-digit number will appear. Please input this number to AP”s
configuration menu within 2 minutes, and network adapter will establish secure connection with
AP automatically.
To stop this procedure before connection is established, click “Cancel”.
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2.6.2 Push Button
To use Push-Button WPS configuration, please click “Push Button Config (PBC)” button. This
is the easiest way to establish secure connection by WPS, but if there’re more than one
WPS-compatible AP using Push-Button config, please use PIN Code instead.
After you click Push Button Config, a message box will appear:
Please activate Push-Button function on wireless access point now, and wireless network
adapter will establish secure connection with access point within one minute.
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CHAPTER 3 Soft-AP Function
Excepting become a wireless client of other wireless access points, this wireless adapter can act
as a wireless service provider also! You can switch this wireless adapter’s operating mode to
“AP” mode to simulate the function of a real wireless access point by software, and all other
computers and wireless devices can connect to your computer wirelessly, even share the
internet connection you have!
Please follow the instructions in following chapters to use the AP function of your wireless
adapter.
3.1 Switch to AP Mode and Station Mode
The operating mode of the wireless adapter is “Station Mode” (becoming a client of other
wireless access points) by default.
Please follow the following instructions to switch to AP mode:
1. Right-click Realtek configuration utility icon, and click “Open Config Utility”.
2. Select “Mode”, and then select “Access Point”.
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It requires few seconds to switch to AP mode, please be patient.
After mode switch is complete, you’ll see general information of software AP, which shows AP’s
SSID and connected wireless clients.
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The “Wireless Network Properties” is displayed.
Please note that Ad-Hoc mode is not available when network adapter is in AP mode. The
description of major setup items are listed below:
Network Name (SSID)
Channel
Please input the SSID (the name used to identify this wireless
access point) here. Up to 32 numerical characters can be
accepted here, excepting space.
Please select the wireless channel you wish to use, from 1 to 13.
To save changes, click “OK”; otherwise click “Cancel” to leave this menu and keep settings
untouched.
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3.1.2 Setup Soft-AP Security
To setup security options for Soft-AP, configure “Wireless Network Security” section as follow:
The description of setup items about wireless security are listed below:
Network Authentication
Data Encryption
Select network authentication mode from dropdown menu.
Select data encryption method from dropdown menu.
If the encryption method is WEP, check either “ASCII” or
“PASSPHRASE” box and input it in the box as WEP passphrase.
Select WEP key index (1-4). If you don’t know which one you should
use, select 1.
ASCII / PASSPHRASE
Key Index
Network key / Confirm
network key
IF network authentication mode is WPA, please input WPA
passphrase in both box.
To save changes, click “OK”; otherwise click “Cancel” to leave this menu and keep settings
untouched.
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3.2 Advanced Settings
If you want to setup advanced settings of software access point, select “Advanced” menu. If you
don’t know the meaning and effects of these settings, keep them untouched.
The description of all setup items are listed below:
Beacon Interval
DTIM Period
Preamble Mode
Set Defaults
Apply
Please input wireless beacon time interval here.
Please input DTIM (Delivery Traffic Indication Message) here.
Select wireless frame preamble mode (long or short) from dropdown menu.
Reset all settings back to factory default value.
Save changes.
If you changed any setting here and cause problem on communicating with wireless clients, click
“Set Defaults” to reset all settings back to default setting.
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3.3 Wireless Statistics
Select “Statistics” menu and the data statistics about software access point will be displayed.
Click “Reset” to reset the value of every item back to “0”.
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3.4 Internet Connection Sharing (ICS)
In this page, you can assign a network adapter on your computer as the path for all wireless
clients to get connected to Internet.
If you have only one network adapter (except this software access point), you don’t have to
select network adapter here; if you have more than one network adapter, select the one you wish
to be used as Internet gateway.
Click “Apply” to save changes (“Apply” is grayed out when no changes are made in this page).
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Appendix A: Product Specification
Standard
Interface
IEEE 802.11a/b/g/n/ac
USB 3.0 (USB 2.0 Compatible)
2.4000~2.4835GHz
Frequency Band
Data Rate
5.150~5.825GHz
11a: 6/9/12/24/36/48/54Mbps;
11b: 1/2/5.5/11Mbps; 11g: 6/9/12/24/36/48/54Mbps
11n (20MHz): MCS0-15, up to 144Mbps
11n (40MHz): MCS0-15, up to 300Mbps
11ac (80MHz): VHTMCS0-9, up to 867Mbps
2.4GHz: 11b(11M): 16±1.5 dBm , 11g(54M): 14±1.5 dBm, 11n(20MHz, MCS7):
14±1.5 dBm, 11n(40MHz, MCS7): 12±1.5 dBm
5GHz: 11a(54M): 12±1.5 dBm, 11n(20MHz, MCS7): 10±1.5 dBm, 11n(40MHz,
MCS7): 10±1.5 dBm, 11ac(80MHz, VHTMCS9): 10±1.0 dBm
2.4GHz: 11b(11M): -79±2 dBm, 11g(54M): -65±2dBm, 11n(20MHz, MCS7):
-64±2dBm, 11n(40MHz, MCS7): -61±2dBm
5GHz: 11a(54M): -70±2dBm, 11n(20MHz, MCS7): -67±2dBm, 11n(40MHz,
MCS7): -64±2dBm, 11ac(80MHz, VHTMCS9): -51±2dBm
64/128 bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK (TKIP/AES), IEEE
802.1x; WPS button
Output Power
Receive
Sensitivity
Security
Antenna
LED
2 Internal Antennas plus 1 External Foldable Antenna
Link/Activity
Windows OS: XP/Vista/7/8 (32 / 64bit)
OS support
Mac OS: Mac OS 10.4, 10.5, 10.6, 10.7, 10.8
Linux Kernel: 2.6.18~3.6.6
Dimension
Weight
3.43 x 10.24 x 7.09 in (87 (L) x 26 (W) x 18 (H) mm)
0.06 lb (25 g)
Operating: 32~104°F (0~40°C);
Temperature
Humidity
Storage: -40~140°F (-40~60°C)
Operating: 0 ~ 90% (Non-Condensing);
Storage: Max. 95% (Non-Condensing)
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Appendix B: FAQ
If you encounter any problem when you’re using this wireless network card, don’t panic! Before
you call your dealer of purchase for help, please check this troubleshooting table, the solution of
your problem could be very simple, and you can solve the problem by yourself!
Scenario
Solution
I can’t find any wireless
access point / wireless device
in “Site Survey” function.
1. Click “Rescan” for few more times and see if you can find
any wireless access point or wireless device.
2. Please move closer to any known wireless access point.
3. “Ad hoc” function must be enabled for the wireless device
you wish to establish a direct wireless link.
4. Please adjust the position of network card (you may have
to move your computer if you’re using a notebook
computer) and click “Rescan” button for few more times. If
you can find the wireless access point or wireless device
you want to connect by doing this, try to move closer to the
place where the wireless access point or wireless device is
located.
Nothing happens when I click 1. Please make sure the wireless network card is inserted
“Launch config utilities”
into your computer’s USB port. If the Realtek configuration
utility’s icon is black, the network card is not detected by
your computer.
2. Reboot the computer and try again.
3. Remove the card and insert it into another USB port.
4. Remove the driver and re-install.
5. Contact the dealer of purchase for help.
1. Click “Connect” for few more times.
I cannot establish connection
with a certain wireless access 2. If the SSID of access point you wish to connect is hidden
point
(nothing displayed in “SSID” field in “Site Survey” function),
you have to input correct SSID of the access point you wish
to connect. Please contact the owner of access point to ask
for correct SSID.
3. You have to input correct passphrase / security key to
connect an access point with encryption. Please contact the
owner of access point to ask for correct passphrase /
security key.
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4. The access point you wish to connect only allows network
cards with specific MAC address to establish connection.
Please go to “About” tab and write the value of
“Phy_Addess” down, then present this value to the owner
of access point so he / she can add the MAC address of
your network card to his / her access point’s list.
1. Move closer to the place where access point is located.
2. Enable “Wireless Protection” in “Advanced” tab.
3. Try a lower TX Rate in “Advanced” tab.
The network is slow / having
problem when transferring
large files
4. Disable “Tx Burst” in “Advanced” tab.
5. Enable “WMM” in “QoS” tab if you need to use multimedia /
telephony related applications.
6. Disable “WMM – Power Save Enable” in “QoS” tab.
7. There could be too much people using the same radio
channel. Ask the owner of the access point to change the
channel number.
Please try one or more solutions listed above.
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Appendix C: Glossary
1. What is the IEEE 802.11g standard?
802.11g is the new IEEE standard for high-speed wireless LAN communications that
provides for up to 54 Mbps data rate in the 2.4 GHz band. 802.11g is quickly becoming the
next mainstream wireless LAN technology for the home, office and public networks.
802.11g defines the use of the same OFDM modulation technique specified in IEEE
802.11a for the 5 GHz frequency band and applies it in the same 2.4 GHz frequency band
as IEEE 802.11b. The 802.11g standard requires backward compatibility with 802.11b.
The standard specifically calls for:
A. A new physical layer for the 802.11 Medium Access Control (MAC) in the 2.4 GHz
frequency band, known as the extended rate PHY (ERP). The ERP adds OFDM as a
mandatory new coding scheme for 6, 12 and 24 Mbps (mandatory speeds), and 18, 36,
48 and 54 Mbps (optional speeds). The ERP includes the modulation schemes found in
802.11b including CCK for 11 and 5.5 Mbps and Barker code modulation for 2 and 1
Mbps.
B. A protection mechanism called RTS/CTS that governs how 802.11g devices and
802.11b devices interoperate.
2. What is the IEEE 802.11b standard?
The IEEE 802.11b Wireless LAN standard subcommittee, which formulates the standard
for the industry. The objective is to enable wireless LAN hardware from different
manufactures to communicate.
3. What does IEEE 802.11 feature support?
The product supports the following IEEE 802.11 functions:
CSMA/CA plus Acknowledge Protocol
Multi-Channel Roaming
Automatic Rate Selection
RTS/CTS Feature
Fragmentation
Power Management
4. What is Ad-hoc?
An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN
adapter, Connected as an independent wireless LAN. Ad hoc wireless LAN is applicable at
a departmental scale for a branch or SOHO operation.
5. What is Infrastructure?
An integrated wireless and wireless and wired LAN is called an Infrastructure configuration.
Infrastructure is applicable to enterprise scale for wireless access to central database, or
wireless application for mobile workers.
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6. What is BSS ID?
A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be
configured with the same BSS ID.
7. What is WEP?
WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40 bit shared key
algorithm, as described in the IEEE 802 .11 standard.
8. What is TKIP?
TKIP is a quick-fix method to quickly overcome the inherent weaknesses in WEP security,
especially the reuse of encryption keys. TKIP is involved in the IEEE 802.11i WLAN
security standard, and the specification might be officially released by early 2003.
9. What is AES?
AES (Advanced Encryption Standard), a chip-based security, has been developed to
ensure the highest degree of security and authenticity for digital information, wherever and
however communicated or stored, while making more efficient use of hardware and/or
software than previous encryption standards. It is also included in IEEE 802.11i standard.
Compare with AES, TKIP is a temporary protocol for replacing WEP security until
manufacturers implement AES at the hardware level.
10. Can Wireless products support printer sharing?
Wireless products perform the same function as LAN products. Therefore, Wireless
products can work with Netware, Windows 2000, or other LAN operating systems to
support printer or file sharing.
11. Would the information be intercepted while transmitting on air?
WLAN features two-fold protection in security. On the hardware side, as with Direct
Sequence Spread Spectrum technology, it has the inherent security feature of scrambling.
On the software side, WLAN series offer the encryption function (WEP) to enhance
security and Access Control. Users can set it up depending upon their needs.
12. What is DSSS? What is FHSS? And what are their differences?
Frequency-hopping spread-spectrum (FHSS) uses a narrowband carrier that changes
frequency in a pattern that is known to both transmitter and receiver. Properly
synchronized, the net effect is to maintain a single logical channel. To an unintended
receiver, FHSS appears to be short-duration impulse noise. Direct-sequence
spread-spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted.
This bit pattern is called a chip (or chipping code). The longer the chip is, the greater the
probability that the original data can be recovered. Even if one or more bits in the chip are
damaged during transmission, statistical techniques embedded in the radio can recover
the original data without-the need for retransmission. To an unintended receiver, DSSS
appears as low power wideband noise and is rejected (ignored) by most narrowband
receivers.
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13. What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique developed by the
military for use in reliable, secure, mission-critical communication systems. It is designed to
trade off bandwidth efficiency for reliability, integrity, and security. In other words, more
bandwidth is consumed than in the case of narrowband transmission, but the trade off
produces a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast. If a
receiver is not tuned to the right frequency, a spread –spectrum signal looks like
background noise. There are two main alternatives, Direct Sequence Spread Spectrum
(DSSS) and Frequency Hopping Spread Spectrum (FHSS).
14. What is WPS?
WPS stands for Wi-Fi Protected Setup. It provides a simple way to establish unencrypted
or encrypted connections between wireless clients and access point automatically. User
can press a software or hardware button to activate WPS function, and WPS-compatible
wireless clients and access point will establish connection by themselves. There are two
types of WPS: PBC (Push-Button Configuration) and PIN code.
Thank you for purchasing a quality Rosewill Product.
support for your product.
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Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1.
2.
3.
4.
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio technician for help.
FCC Caution
This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the authority to operate
equipment.
Federal Communication Commission (FCC) Radiation Exposure Statement
This equipment complies with FCC radiation exposure set forth for an uncontrolled environment. In order to avoid the possibility of
exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20cm (8 inches) during
normal operation.
The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
R&TTE Compliance Statement
This equipment complies with all the requirements of DIRECTIVE 1999/5/EC OF THE EUROPEAN PARLIAMENT AND THE
COUNCIL of March 9, 1999 on radio equipment and telecommunication terminal Equipment and the mutual recognition of their
conformity (R&TTE)
The R&TTE Directive repeals and replaces in the directive 98/13/EEC (Telecommunications Terminal Equipment and Satellite Earth
Station Equipment) As of April 8, 2000.
Safety
This equipment is designed with the utmost care for the safety of those who install and use it. However, special attention must be
paid to the dangers of electric shock and static electricity when working with electrical equipment. All guidelines of this and of the
computer manufacture must therefore be allowed at all times to ensure the safe use of the equipment.
EU Countries Intended for Use
The ETSI version of this device is intended for home and office use in Austria, Belgium, Denmark, Finland, France, Germany, Greece,
Ireland, Italy, Luxembourg, the Netherlands, Portugal, Spain, Sweden, and the United Kingdom.
The ETSI version of this device is also authorized for use in EFTA member states: Iceland, Liechtenstein, Norway, and Switzerland.
CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference, in which case the user may be
required to take adequate measures.
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RF Exposure Information (SAR)
This device meets the government’s requirements for exposure to radio waves. This device is designed and
manufactured not to exceed the emission limits for exposure to radio frequency (RF) energy set by the Federal
Communications Commission of the U.S. Government.
The exposure standard for wireless device employs a unit of measurement known as the Specific Absorption Rate, or
SAR. The SAR limit set by the FCC is 1.6W/kg. *Tests for SAR are conducted using standard operating positions
accepted by the FCC with the device transmitting at its highest certified power level in all tested frequency bands.
Although the SAR is determined at the highest certified power level, the actual SAR level of the device while operating
can be well below the maximum value. This is because the device is designed to operate at multiple power levels so
as to use only the poser required to reach the network. In general, the closer you are to a wireless base station
antenna, the lower the power output.
SAR compliance has been established in the host product(s) (laptop computers), tested at 5mm separation distance to
the human body, and tested with USB slot configurations including Horizontal-UP, Horizontal-Down, Vertical-Front,
Vertical-Back. This device can be used in host product(s) with substantially similar physical dimensions, construction,
and electrical and RF characteristics.
The highest SAR value, tested per FCC RF exposure guidelines for USB dongle, as described in this user guide, is
1.19 W/kg. The FCC has granted an Equipment Authorization for this device with all reported SAR levels evaluated as
in compliance with the FCC RF exposure guidelines. SAR information on this device is on file with the FCC and can be
This USB dongle transmitter is approved for use in typical laptop computers. To comply with FCC RF exposure
requirements, this USB dongle should not be used in other devices or certain laptop and tablet computer
configurations where the USB connectors on the host computer are unable to provide or ensure the necessary
operating configurations intended for the device and its users or bystanders to satisfy RF exposure compliance
requirements. This USB dongle should be installed and operated with minimum distance 5mm between the radiator &
your body.
Your product is marked with this symbol, which is known as the WEEE mark. WEEE stands for Waste
Electronics and Electrical Equipment. It means that used electrical and electronic products should not
be mixed with general waste. Used electrical and electronic equipment should be treated separately.
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