Apple Extended Keyboard II
Source: macclack.com - Apple Extended Keyboard II

Apple Extended Keyboard II

Apple Extended Keyboard II is a minor update to the Apple Extended Keyboard to coincide with the release of the Macintosh IIsi in 1990, it added an adjustable height feature.

(M0312) was manufactured with the classic Alps mechanisms
(M3501) was manufactured with Mitsumi or Alps mechanisms.

History of Apple Keyboard II is provided by wikipedia

Apple Keyboard II – General information

Overview
IntroducedOctober 1990
DiscontinuedJanuary 1999
Model NumberM3501
M0312
Price$163
Weight2.7 Ibs.
1.224 KG
Dimensions0.75″-1.6″ H* x 18.7″ W x 7.7″ D
1.87-4.06 cm H* x 47.49 cm W x 19.55 cm D

*Dimension front-rear

System Requirements
  • Macintosh with ADB port
Keyboard
Keys in Total105
Alphanumeric48
Special1 – Power
15 – Function keys
Numeric18
Cursor-control4 (T-style)
Connections
ConnectionADB
Power
PowerUnknown
Related products

Source: Wikipedia, Macclack, Apple

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