Apple Apple Extended Keyboard vs Apple Apple Extended Keyboard II

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Apple Extended Keyboard compared with Apple Extended Keyboard II

	AppleApple Extended Keyboard	AppleApple Extended Keyboard II
Overview
Released
Released	1987	1990
Typing
Layout
Layout	Full size	Full size
Switches
Switches	Mechanical	Mechanical
Backlight
Backlight	None	None
Keys labelled for
Keys labelled for	Mac	Mac
Touch ID
Touch ID	No	No
Switches
Switches	Alps SKCM Orange or Salmon mechanical switches in M0115 variants, identified by Deskthority.	Mechanical switches; Deskthority documents Alps and Mitsumi switch variants across M0312 and M3501 units.
Layouts
Layouts	Apple's July 1987 product sheet lists 105 keys, including a numeric pad, 15 function keys, six editing keys and inverted-T arrows.	Apple's M0312 specification lists 105 keys, including an 18-key numeric pad, 15 function keys, six editing keys and inverted-T arrows.
Special keys
Special keys	F1–F15; the case marks F1–F4 for undo, cut, copy and paste, though Apple says these actions were not assigned by default.	F1–F15 function keys with a supplied labelling overlay; lock indicators for Caps, Num and Scroll Lock.
Connections and battery
Connects by
Connects by	Cable	Cable
Power
Power	Cable	Cable
Receiver
Receiver	Apple Desktop Bus cable; Apple's product sheet says another ADB input device can be chained through the keyboard.	Detachable 1 m Apple Desktop Bus cable supplied; the keyboard has ADB ports for connection to compatible Apple computers.
Works with
Works with	Any Apple personal computer with an ADB interface, according to Apple; the product sheet names the Macintosh SE and II.	Any Apple personal computer with an Apple Desktop Bus interface, according to Apple's specification.
Design
Weight
Weight	1600 g	–
Width × depth × height
Width × depth × height	486 × 188 × 56.4 mm	475 × 195 × 41 mm
Materials
Materials	Beige plastic enclosure with fixed slope.	Beige plastic enclosure; the rear foot raises the stated typing angle from 6° to 14°.
Colours
Colours	Beige.	Beige.
In the box
In the box	Apple's order list includes the keyboard and cable, referral card and limited warranty statement.	Keyboard, 1 m ADB cable, function-key overlay, owner's guide and warranty statement in Apple's M0312 packing list.