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SNKB-M1989-BT3-122

Notes

This keyboard was featured in my Differences between and classifications of 122-key Model Ms comparison topic.

Original specs/details

Full Name
IBM 3476/3477 InfoWindow Twinax Display Station Keyboard
Part Number
1394324
Type
Model M Type III Functional Key Keyboard
Nickname
Battlecruiser
Switches
IBM membrane buckling springs
Feet
Single-setting elongated flip-out feet
Protocol
Set 3
Connection
Cable
Cable
Grey coiled fixed modular 8P8C ("RJ-45")
Form Factor
120%
Production Date
1989-09-15
Acquisition Date
2019-09-12

About this keyboard type

The Type III 122-key Model M terminal keyboard was a major overhaul over the previous two types' design. The design language of Type III is much closer to that of other Model Ms than Type I and Type II, which were both made to resemble the 122-key Model Fs they replaced. Type III is also smaller and lighter than its predecessors and completely did away with DIP switches. Whilst the protocol remained the same, the cable's plug was swapped from 240-degree pin arranged DIN to modular 8P5C (ethernet-like) to suit its typical host machines - the IBM InfoWindow and InfoWindow II series display stations. Whilst still possessing a coil, the cable's shape is also a flat design rather than round and it can be routed straight out the middle of the keyboard's rear or through two channels going to either side of the said rear. Unlike Types I and II and the "F122", Type III's 24-key function key block was only labelled with an "Fxx" nomenclature.

Typing demo