Editing Apple Adjustable Keyboard (section)

== Physical Design ==

=== Split Mechanism ===

The keyboard's defining feature was its hinged center that allowed the alphanumeric section to split into two halves:
* '''Hinge location:''' Rear center of keyboard base
* '''Split points:''' Between 5/6, T/Y, G/H, and B/N keys
* '''Maximum angle:''' 30 degrees total (15 degrees per side)
* '''Adjustment:''' Continuous positioning, friction-based retention
* '''Spacebar:''' Remained fixed in center, enlarged for accessibility

The hinge mechanism employed a metal base plate that provided structural support while allowing smooth adjustment. Users could position the keyboard from a traditional straight configuration to the maximum split angle without tools or locking mechanisms. The friction-based system maintained position during use but allowed easy readjustment.

=== Case Construction ===

The keyboard case utilized a multi-layer design:
* '''Upper housing:''' Platinum gray ABS plastic matching Snow White design language
* '''Base plate:''' Steel reinforcement for rigidity and hinge support
* '''Lower housing:''' Textured bottom with rubber feet
* '''Thickness:''' Significantly thicker than contemporary Apple keyboards
* '''Finish:''' Matte texture consistent with professional Macintosh systems

=== Palm Rests ===

Three contoured palm rests were included:
* '''Main keyboard rests:''' Two pieces, one per split section
* '''Keypad rest:''' Single piece for numeric keypad
* '''Material:''' Hard ABS plastic with textured surface
* '''Attachment:''' Friction fit, prone to detachment when lifting keyboard
* '''Profile:''' Ergonomically contoured to promote neutral wrist position

=== Adjustable Feet ===

Standard flip-down feet provided slope adjustment:
* '''Positions:''' Two angles (flat and raised)
* '''Location:''' Rear edge of main unit and keypad
* '''Construction:''' Integrated plastic tabs
* '''Criticism:''' Lacked vertical height adjustment for optimal ergonomics