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The link didn’t work for me, but you DON’T want a null modem cable for connecting to an external modem.

the type of cable depends on the modem you’re buying. It has to be a RS-232 Serial Modem Cable. I believe that U.S. Robotics has 25 pins female connector on the modem side, so you’d need DB25 Male to DB9 Female that looks something like this:

(DB25 Male plugs into the modem, DB9 Female end plugs into the back of computer)


Here is a picture of the back of the U.S. Robotics USR5686E Modem


Edited By Moderator on 1242937599