PS/2 Model M Page
RS6000 Keyboard Port Pinout Versus PS/2 Keyboard Port Pinout
Gathering data, but why you couldn't cobble together a small enclosure with
a fully wired RS6000 Keyboard port, pull out the two connectors needed for the
speaker, and pass the keyboard signals to a normally wired KB port to feed a
Model M, I dinna ken.
RS/6000 Keyboard Pinout
PS/2 Keyboard Pinout
Keyclicks Without Keyboard Speaker?
Some systems were shipped without a speaker in the keyboard or system unit
(specifically, the "Quiet Touch"). The following shows the keyboard attached to
a speaker box with a 3 ft. cable which attaches to the standard I/O port K. The
speaker box has a keyboard connector to pass the keyboard signals through to
the keyboard. The keyboard cable is supplied with the keyboard.
Optional Keyboard Cable with Speaker (FC #6599 or FRU 93H8878)
The speaker is a little 8 ohm, 0.2W job, IBM part number 1392326.