T
ROUBLESHOOTING AND
H
ELP
R
ESOURCES
6-11
USB A to B cable
NOTE: You should NOT attempt to connect or use your modem with both the USB and serial cable connected at the same
time. Your modem may fail to respond. If this occurs, you must power down your computer, disconnect the cable you are
not using, and restart your system.
4. Is your phone cord properly connected? The phone cord should be plugged into the
jack on the modem and into the wall phone
jack. Use the phone cord included in your modem’s box if possible.
PROBLEM: My computer isn’t recognizing my modem.
Possible solution:
Make sure the modem is plugged in and turned on. If it is, check the outlet with another electric device (like a lamp) to be sure that you
are getting power. Also, you must use the power supply that came with your modem; other similar-looking power supplies may be of
different voltages and could damage your modem. When your modem is properly connected to power and is turned on, the Power light
on the front panel will be on.
Possible solution:
Make sure you are using the proper cable. If you are using your modem as a USB device, you will to need to purchase a USB A to B
cable. If you are using your modem as a serial device, you will need to purchase an RS-232 serial/modem cable. Check the packaging
of the cable you bought. There are many computer cables that look similar to an RS-232, such as a Null Modem cable, that will not
work correctly with this modem.
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