US Robotics 3CP5613 User Manual page 24

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 MODEM AS A SERIAL DEVICE:
Possible solution:
You may be using a COM port that is either already in use or not configured correctly. To work properly, this modem needs to be
plugged into an enabled serial port which is assigned to a free COM port.
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.
Windows 95/98
Right-click the My Computer icon on your desktop. Click Properties.
Click the Device Manager tab. Look under Ports (COM & LPT). If the Communications 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 NT
Click Windows Start, Settings, and then Control Panel. Double-click Ports. Make sure the port you are plugging the modem
into appears in the list. If it does not, the port needs to be added and possibly enabled in the BIOS. Consult your Windows NT
manual for information about adding ports.
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ROUBLESHOOTING AND ELP ESOURCES
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