1992 IBM model M (51G8572) Made by IBM 09-16-92 with speaker

SKU: 5008226 Category:


part# 51G8572
serial# 5008226
date 09-16-92 (29 years old)
IBM logo black logo on white background
cable removable SDL, coiled cable, ps/2 connector (used cable, long length)
key caps removable (two piece, key stem + key cap)
key switches clicky = buckling spring
Designed when “real” typing on a quality keyboard was a required skill to use a $4000 IBM personal computer. PC Mag link
(pre-dates the then new mouse-click and graphical user interface operating system later to be known as Microsoft Windows 3.1 and 95)
condition Keyboard pre-selected as good candidate and passed initial testing to confirm mechanical condition. Upper keyboard case disassembled and individual 101 keys have been removed and fully cleaned by hand. Inspection of interior plate. All 56 plastic rivets drilled out and replaced with M2 precision screws to restore internal integrity.  Interior plate vacuumed to remove foreign debris.Keyboard re-assembled and re-tested post-cleaning. Individual photography of rear label. Photo gallery of typical restoration workflow.
comments Many pre 1993 model M keyboards include a speaker grill on the rear case, but most model M keybaords do not have a speaker.  The 1394540 and 51G8572 keyboards includes the internal speaker that was originally useful in IBM RS/6000 computers.  Unknown how to make functional on a modern PC systems.
comments This keyboard is tested to work 100%. The keyboard assembly has been confirmed to be in functional, operational condition.


Additional information

Weight 7 lbs
Dimensions 20 × 9 × 3 in

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