============================================================================= 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.