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SNKB-M1993-52P-101

Original specs/details

Full Name
Lexmark Classic Touch Keyboard with Integrated 25mm Trackball
Part Number
1398150
Type
Model M5-2 Trackball Keyboard
Switches
IBM membrane buckling springs
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to dual PS/2
Form Factor
Full-size
Built-In Mouse
25mm Trackball
Production Date
1993-12-14
Acquisition Date
2019-12-26

About this keyboard type

The Model M5-2 is one of two variants of the Enhanced Keyboard featuring an integrated trackball pointing device attachment, along with the M5-1. The M5-2 uses a 25mm trackball placed on the top-left corner of the keyboard case and features eight mouse buttons; two for left and right click and two for left and right stepped-click, with both pairs repeated on the back-side of the trackball module. Unlike the M5-1, the M5-2 has remained in production and continues to be produced by Unicomp as the Unicomp Classic Trackball Keyboard (also previously called "On-The-Ball"). Collectively, the M5s were the last introduced Model M variants to feature a modular SDL connection. However, Unicomp has since moved the M5-2 to a fixed cable design.