Lexmark IBM Model M PS/2 101-Key Enhanced Mechanical Keyboard 1995 51G8572
The Enhanced Keyboard, first produced in 1985, is a 101-105-key keyboard designed for personal computers and terminals. It is commonly known by the manufacturing designation Model M, although it was not the only keyboard with this designation. Its key layout became the industry standard, and is still used on most desktop keyboards in an extended 104/105-key form.Lexmark continued to make Model M's for IBM, its primary customer.
The Enhanced Keyboard consists of a Model M assembly mounted inside a plastic (usually ABS, or a mixture of PC and ABS) casing. The casing consists of a separate upper and lower part, which clasp together at the front of the keyboard with interlocking tabs, and are secured at the back with four 5.5 mm (7/32") hexagonal screws. The controller card is located either under the keyboard assembly or mounted on the assembly itself, above the numeric keypad. The cable exits at the top right. The keys on most Enhanced Keyboards consist of a separate base (stem) and a detachable printed cover, but some used single-piece key. Double-piece key eventually became optional, as some customers found the single-piece design less likely to be lost or stolen. Virtually all Enhanced Keyboards have a small speaker grille on their bottom surfaces; however, only a few variants actually include a speaker (the keyboards of the RS/6000 workstations being the primary example).
Distinctive soundThe Model M's buckling-spring key mechanism has a distinctive sound described as "clicky". Most users accepted the sound as an inherent part of using the keyboards. Some users, including present-day enthusiasts, consider it a reminder of the Model M's sturdiness compared to other manufacturers' quieter but cheaper and less durable rubber-dome keyboards (many of which were made to resemble the Model M).
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Condition Description: Used, tested working. All keys responsive. Good cosmetic condition, the device shows some light yellowing
Brand: Lexmark IBM
Model: M
Included: Device with cable only
Any other accessories are not included
30 Day Warranty, Guaranteed Refund or Replacement
All items sold and shipped by RefurbConnect are Tested for Key Functions, R2/Ready for Buckling spring over membrane
Interface PS/2Dimensions 492 × 210 × 58 mm(19.37 × 8.27 × 2.28 in.)with legs extendedWeight 5 lb
