US Robotics USR3520 User Manual page 81

Low Cost Serial Card Specifications
Specifications:

Female DB9 connector

One serial port RS-232, 921.6 Kbaud maximum speed
Note:
The serial card is DCE device!
Connect the Gateway with a DTE device (laptop)
In order to connect the gateway to a laptop or any other DTE device you should use a regular straight
cable.
Revision: 1.00 Copyright 2015 U.S. Robotics Corporation 81 | P a g e