Us robotics USR5420 Troubleshooting Guide
802.11g Wireless USB Adapter
Troubleshooting Guide
Note: Your product number is USR5420. It is very important that you have your serial number
written down before you install the 802.11g Wireless USB Adapter. You can find your serial
number on the bottom label of the 802.11g Wireless USB Adapter and on the side of the package.
If you ever need to call our Technical Support department, you will need this number to receive
assistance.
Product Number Serial Number
USR5420
Ad hoc mode is used for peer-to-peer network configurations. Infrastructure mode is used to
connect to a wireless access point or wireless router. Each 802.11g Wireless USB Adapter in
the wireless network must have the correct mode selected within the Configuration Utility.
Troubleshooting
Windows could not locate the drivers for the 802.11g Wireless USB Adapter.
Possible Solution:
The software must be installed before the 802.11g Wireless USB Adapter is connected to your
computer. Click Cancel on the Found New Hardware Wizard screen, unplug the 802.11g
Wireless USB Adapter from your computer, and perform the Installation Procedure again,
making sure to install the software and drivers first.
I cannot connect to the Internet.
Possible Solution:
Check the Configuration Utility icon in the system tray to confirm the connection status. If you
are connected to your Access Point or Wireless Router, the icon will be green. If the icon is red,
open the Configuration Utility and scan the area so that you can connect to the correct
wireless network.
Possible Solution:
Make sure that your computer is using an IP address that is within the default range of your
access point or wireless router. For example, if the Default Gateway of your access point is
192.168.123.254, your IP address should be in the range of 192.168.123.xxx. To verify all of
these settings, perform the following steps:
Windows 98 or Me Users: Click Windows Start and then Run. Type winipcfg and click
OK. Select your 802.11g Wireless USB Adapter and check the IP Address, Subnet
Mask, Default Gateway, and DNS server data to make sure they are correct. If the
information is not correct, click Release All and then click Renew All.
Windows 2000, or XP Users: Click Windows Start and then Run. Type cmd and click
OK. At the DOS prompt, type ipconfig /all Check the IP Address, Subnet Mask,
Default Gateway, and DNS server data to make sure they are correct. If the information is not correct, type ipconfig /release and press ENTER. Then, type
ipconfig /renew and press ENTER.
part number R24.0461.00
Printed in Taiwan
Possible Solution:
Try performing the ping procedure to make sure you can connect with different areas of the
wireless network and the Internet. If at any time during the ping procedure you do not receive
a return message for a successful ping, this means that you cannot connect to that IP address.
After you have made the corrections, continue with the ping procedure.
1 Click Windows Start and then click Run. In the Run dialog box, Windows 98 and Me
users should type command and click OK. Windows 2000 and XP users should type
cmd and click OK.
2 At the command prompt, type Ping 127.0.0.1 This is your local host address and this
will ensure that the TCP/IP protocol is installed and functioning properly. If you
cannot complete this ping, reinstall the TCP/IP protocol on your computer. Refer to
your operating system’s documentation for instructions.
3 Type Ping followed by your IP address. To determine your IP address, refer to the
previous Possible Solution. This will ensure that your computer is responding to
requests and that the 802.11g Wireless USB Adapter is properly installed. If you
cannot complete this ping, uninstall the 802.11g Wireless USB Adapter and repeat the
installation procedure.
4 Type Ping followed by your gateway address to check the communication with your
gateway. The default gateway address is the IP address of your wireless router or
access point. Check your wireless router or access point to verify this address. This
will ensure that you can connect to the wireless network. If you cannot complete this
ping, make sure your wireless settings are correct and that the USB cable of the
802.11g Wireless USB Adapter is plugged in and properly connected to your computer.
5 Type Ping followed by the outside Internet address that is provided by your ISP. This
procedure will ensure that your wireless network can connect to the Internet. If you
cannot complete this ping, verify your Internet connection between your modem and
your wireless router or access point.
6 Type Ping followed by your known DNS server address. This will allow you to resolve
valid Internet host names to IP addresses and to verify that you can access the
Internet.
Security is enabled on my wireless network and my 802.11g Wireless USB Adapter
cannot connect.
Possible Solution:
The 802.11g Wireless USB Adapter supports 64 and 128 bit encryption. Make sure your
wireless network is not using a higher encryption rate, such as 256 bit. Verify that all of the
security features you have entered for the profile of your 802.11g Wireless USB Adapter match
the settings for your wireless network. For more information about setting up connection
profiles and security features, refer to the Navigating the Wireless Configuration Utility
section of the User Guide on the U.S. Robotics Installation CD-ROM.
Possible Solution:
If you created a Profile Setting, unplug the USB cable from the 802.11g Wireless USB Adapter
and then plug it back in.
I cannot connect to another wireless device in Ad Hoc mode.
Possible Solution:
To connect to another wireless device in Ad Hoc mode, you must create a Profile Setting and
supply the necessary network information to match the other wireless device to which you
want to connect. Open the Configuration Utility, click the Profile tab, and click Add. Enter a
Profile Name and click Next. Enter a Network Name, select Ad hoc as the Network Type, select
the appropriate channel, and click Next. If you want to enable any security settings, make the
appropriate selections so that the wireless devices match and click Next. Enter the
appropriate security settings so that the wireless devices match and click Next. Click
Complete to finish setting up the Profile. In the Profile screen, select the profile you just
created and click Connect. Click the Site Survey tab, locate the correct network name, and
click Connect. If you do not see the correct network name, click Refresh to scan for the Ad Hoc
network connection.
The 802.11g Wireless USB Adapter cannot communicate with other computers in
the wireless network.
Possible Solution:
Ensure that each computer in the wireless network is powered on.
Possible Solution:
Ensure that each 802.11g Wireless USB Adapter is configured with the same settings.
Possible Solution:
Ensure that each 802.11g Wireless USB Adapter is configured with the same security options.
Possible Solution:
Ensure that the SSID and the network name are the same on each station with an 802.11g
Wireless USB Adapter installed. The SSID field and the network name field are case sensitive,
so make sure you have typed them correctly.
Possible Solution:
Ensure TCP/IP is installed. Ensure you are a part of the same domain or workgroup as the
802.11g Wireless USB Adapter. Ensure that you are automatically obtaining an IP address or
that you have a correct IP address and subnet mask for the wireless network. Restart the
computer that has a connectivity issue. Ensure that you have some files available to be shared
and that file and print sharing are enabled on your computers. Refer to the documentation for
your operating system for instructions on how to enable file and print sharing.
The U.S. Robotics Installation CD-ROM did not automatically launch when I
inserted the Installation CD-ROM.
Possible Solution:
Some programs may keep the autolaunch feature of the Installation CD-ROM from beginning.
Close any open applications and reinsert the Installation CD-ROM. If your CD-ROM still does
not automatically launch, click Windows Start, Run, and type D:\setup (if your CD-ROM drive
uses a different letter, type that letter in place of “D”) and click OK.
I accidentally clicked Cancel during the installation procedure.
Possible Solution:
Remove and reinsert the U.S. Robotics Installation CD-ROM into your CD-ROM drive. Repeat
the installation procedure of the software before you install any hardware.
My computer does not recognize the 802.11g Wireless USB Adapter.
Possible Solution:
The 802.11g Wireless USB Adapter may not be properly connected. Check the connections of
the USB cable to the 802.11g Wireless USB Adapter and to the USB port on your computer.
The 802.11g Wireless USB Adapter is not receiving any power.
Possible Solution:
If you have the 802.11g Wireless USB Adapter plugged into a peripheral device, such as a USB
hub, the 802.11g Wireless USB Adapter may not be powered. Plug the 802.11g Wireless USB
Adapter directly into a USB port on your computer.
The 802.11g Wireless USB Adapter does not work properly, and I may need to
uninstall the device.
Possible Solution:
Check to be certain the 802.11g Wireless USB Adapter is not in use before removing it. The
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