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


1 in stock

SKU: 5008679 Category:


date09-16-92 (28 years old)
IBM logoblack logo on white background
cableremovable SDL, coiled cable, ps/2 connector (used cable, long length)
key capsremovable (two piece, key stem + key cap)
key switchesclicky = 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)
conditionKeyboard 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.
commentsMany 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.
commentsThis keyboard is tested to work 100%. The keyboard assembly has been confirmed to be in functional, operational condition.
comments Previous owner must have loved this keyboard that he added added a security loop on the back of the keyboard so that it could be locked to his desk.  (see last photo).  Metal retention part can be easily removed by owner with a flat-head screwdriver.

Additional information

Weight8 lbs
Dimensions24 × 12 × 3 in

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