If You Are Using This Modem As A Serial Device - US Robotics USR5610B User Manual

External USB Modems 21
Possible solution:
If the modem has worked previously and you removed the USB cable
from the computer and then reattached it, try another USB port. It may
have been set up originally on the other USB port. You should notice
some minimal activity from your computer such as hard disk activity or an
hour glass icon for a few seconds when you insert or remove a USB cable
from the computer or the USB device. If you do not see anything, your
system may not be properly communicating with the USB ports.
If You Are Using This Possible solution:
Modem as a Serial
You may be using a COM port that is either already in use or not
Device
configured correctly. To work properly, this modem needs to be plugged
into an enabled serial port which is assigned to a free COM port.
Windows 2000 Make sure your COM port is not already in use by
another modem. Click Windows Start, Settings, and Control Panel,
and then double-click Phone and Modem Options. Click the Modems
tab. Look for another modem already in the machine. If there is another
modem listed, check which COM port it is using. If this modem is already
using the available COM port, you can either use another COM port or
uninstall the modem. See the modem's manual for uninstallation
instructions.
Right-click the My Computer icon on your desktop. Click Properties.
Click Hardware. In the Device Manager section, click Device Manager.
Look under Ports (COM & LPT). If the COM Ports have yellow
exclamation points or red Xs over them, your COM ports may be
configured incorrectly or are disabled. If this is the case, you may need to
contact your computer manufacturer.
Windows 95/98
Make sure your COM port is not already in use by
another device. Click Windows Start, Settings, and Control Panel, and
then double-click Modems. Look for another modem already in the
machine. If there is another modem installed, click the Diagnostics tab
to find out which COM port it is using. If this modem is already using the
available COM port, you can either use another COM port or uninstall the
modem. See the modem's manual for uninstallation instructions.
Right-click the My Computer icon on your desktop. Click Properties.
Click the Device Manager tab. Look under Ports (COM & LPT). If the