IBM - 91F7966 - Multiport Adapter 8-Port RS-232 RS-422 Micro Channel 91F7966 - IBM - Artic 8-Ports RS-232 / RS-422 Multiport/2 Micro Channel Adapter $69.38 $58.80
IBM - 15F8852 - Interface Board 8-Port RS-422 MultiPort 15F8852 - IBM - Atric MultiPort/2 8-Port RS-422 Interface Board $132.24 $107.52
IBM - 16F1896 - Daughter Board 8-Port RS-232C RS-422A 16F1896 - IBM - Artic 8-Ports RS-232C / RS-422A Daughter Board $434.69 $368.38
IBM - 09F1889 - Interface Board 8-Port RS-232C 09F1889 - IBM - 8-Ports RS-232C Electrical Interface Board for PS/2 Model 55 SX HMS $109.07 $88.68
IBM - 93H6541 - Adapter 8-Port Asynchronous EIA-232 RS-422 93H6541 - IBM - 8 Port Asynchronous EIA-232/RS-422 Adapter $79.52 $67.39