Apple Adjustable Keyboard


At A Glance

The Apple Adjustable Keyboard was an ergonomic and adjustable keyboard designed to solve RSI (Repetitive Stress Injuries) resulting in carpal tunnel syndrome. It was launched in 1993 at a price of US$249.You can view the original specifications at the Apple support here here.

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Original specifications


  • Compatibility:
    • Plugs directly into any Apple Desktop Bus port on your Macintosh
    • Requires Macintosh system software version 6.0.7 or later
  • General:
    • Total number of keys: 111 (ANSI), 112 (ISO)
    • Required voltage: 5 @ 10% V DC
    • Storage temperature: 40 to 116.6 degrees F (40 to 47 degrees C)
    • Operating temperature: 50 to 104 degrees F (10 to 40 degrees C)
    • Operating humidity: 95 percent maximum, noncondensing at 77 to 104 degrees F (25 to 40 C)
    • Two cables: 3-ft. (1.0 m) coiled cord and 13.4-in. (340 mm) cable
    • Total weight: 3 lb. 12 oz. (1.7 kg) keyboard and keypad with palm rests
  • Characteristics of Typing Keys:
    • Typical distance between keys: 0.75 in. (19.05 mm)
    • Total key travel: 0.138 in. (3.5 mm)
    • Peak tactile force: 0.69 – 0.25 N
    • vel to peak tactile force: 0.06 + 0.008/0.016 in. (1.5 + 0.2/0.4 mm)
    • Keyswitch minimum life: 10 million cycles
  • Keyboard Array:
    • ANSI version: 68 keys total (47 printing keys)
    • ISO version: 69 keys total (48 printing keys)
    • Escape key
    • Power-on key
    • Volume up, volume down, mute, and record keys
    • Green LED indicator for Caps Lock
    • Two ADB 4-pin minicircular connectors

  • Size and weight:
    • Height (rear): 1.48 in. with flip feet closed
    • Width: 15.18 in.
    • Depth: 6. 26 in.
    • Weight: 2 lb. 5 oz. (1.055 kg) without palm rests; 2 lb. 7 oz. (1.223 kg) with palm rests
  • Keyboard Slope:
    • 5 degrees with flip feet closed; 12.5 degrees with flip feet open
  • Keyboard Opening Angle:
    • 30 degree maximum, 0 degree minimum
  • Power Requirements:
    • LED off: 7 mA
    • LED on: 19 mA
  • Keypad:
    • 43 keys total
    • 18-key numeric keypad
    • 15 function keys
    • Four cursor-control keys in inverted-T layout
    • Six special screen-editing keys
    • Two ADB 4-pin minicircular connectors



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Low End Mac

Low End Mac has a great overview of the Apple Adjustable Keyboard here.
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