Ref: 04270003
Title: AST Four-Port Asynch Card
Date:  07/19/88

Copyright 3Com Corporation, 1991.  All rights reserved.

The AST Four Port Asynch Card uses one interrupt (either interrupt 5 or 7) in
the 3S/400.  It has one 37-pin port that is equal in function to 4 AT-Class
9-pin serial ports.  The 37-pin cable branches out to four 25-pin serial
connectors.

It is possible to install an AST Four Port Board in a 3S/400.  You can find
the documentation on the AST 4 Port card in the Installation and Setup
Guide for the 3S400 on page 7-4.  You will have to change the jumper
settings from the factory settings (on the AST card).
