    AST RESEARCH, INC.         TECHNICAL BULLETIN #0667                  02-18-91

                          PROTEON 16/4MB TOKEN RING ADAPTER
                                (MODEL 1390) AND OS/2

    With a Proteon 1390 (16/4MB) Token Ring board, running in the UTP mode
    (unshielded twisted pair) installed in a Premium II 386SX-20, errors may
    occur when trying to run OS/2 version 1.21 or LAN MAN with Proteon's software
    driver version 2.07.

    The problem has been resolved by Proteon.  All customers experiencing this
    problem should contact Proteon for a software upgrade.