Apple Apple Adjustable Keyboard vs Apple AppleDesign Keyboard

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Apple Adjustable Keyboard compared with AppleDesign Keyboard

	AppleApple Adjustable Keyboard	AppleAppleDesign Keyboard
Overview
Released
Released	February 1993	April 1994
Typing
Layout
Layout	Full size	Full size
Switches
Switches	Mechanical	Membrane
Key travel
Key travel	3.5 mm	–
Backlight
Backlight	None	None
Keys labelled for
Keys labelled for	Mac	Mac
Touch ID
Touch ID	No	No
Switches
Switches	Alps SKFS mechanical switches on the main typing keys, identified by owners on Deskthority; Apple specifies 3.5 mm key travel.	Rubber-dome mechanisms; Deskthority identifies NMB dome-with-slider and Alps membrane-dome variants of model M2980.
Layouts
Layouts	Apple's ANSI set totals 111 keys across the split main keyboard and separate extended keypad; an ISO version has 112.	Apple's specification lists 105 keys, including an 18-key numeric pad, 15 function keys, six editing keys and inverted-T arrows.
Special keys
Special keys	The separate keypad holds 15 function keys, six editing keys, four inverted-T arrows and an 18-key numeric pad; main keyboard has volume, mute and record keys.	F1–F15, power-on/reset key and three lock indicator LEDs.
Connections and battery
Connects by
Connects by	Cable	Cable
Power
Power	Cable	Cable
Receiver
Receiver	Apple Desktop Bus connection; Apple's order list includes a 1 m coiled ADB cable and a 340 mm jumper cable for the keypad.	Fixed 1.8 m cable with a four-pin Apple Desktop Bus connector, according to Apple's specification.
Works with
Works with	Apple's announcement says it works with Macintosh computers running System Software 6.0.7 or later and an ADB port.	Any Apple personal computer with an ADB interface, according to Apple; TidBITS reported it bundled with the Performa 570 series from April 1994.
Design
Weight
Weight	1700 g	1200 g (better)
Width × depth × height
Width × depth × height	–	475 × 175 × 41 mm
Materials
Materials	Split beige plastic enclosure with detachable palm rests and feet; the main keyboard opens from 0° to 30°.	Beige plastic enclosure with an adjustable keyboard slope of 6° to 12°.
Colours
Colours	Beige.	Beige; Deskthority also documents a black variant.
In the box
In the box	Main keyboard, three palm rests, extended keypad, template, ADB cables, installer disk and manual in Apple's order list.	Keyboard with attached ADB cable.