5576-002 Keyboard for IBM PS/55 IBM Personal System/55 The following keyboards have the PS/2 port. These keyboards have new scancode sets (81h, 82h, 8Ah) to support additional keys for Japanese input method. 5576-001 - Same layout as 5550 type 1 (5556-001) keyboard. 5576-002 - Japanese layout based on 101 Enhanced keyboard, but uses Alps Electric Co. mechanical key switches. 5576-003 - Space-saving version of 5576-002 5576-A01 - OADG reference keyboard.[4][dead link] 5576-A01 - OADG reference keyboard.[5]