P/N 1395985
Type
Model M Enhanced Keyboard with Speaker
OEM
IBM UK
Switches
IBM membrane buckling springs
Earliest Appearance
1990 Q1
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
102
Form Factor
Full-size
Layout/Language
UK ISO
Data Last Updated
2021-04-08
More about this type of keyboard...
The IBM RISC System/6000 Keyboard was a variant of the Enhanced Keyboard featuring an integrated speaker on the bottom side of the casing. The speaker is believed to act as an audible cue when keys are pressed, similar to the purpose of solenoids in some earlier Beam spring and Model F keyboards. The speaker connects via a usually unused pin in the PS/2 plug, thus the speaker cannot be used on other systems without intercepting the signal with an additional separate circuit.