Keyboard positioning system

A device for mounting a keyboard to a base and for positioning the keyboard in a backward tilted position for use by a hand of an operator, the device comprising:

• (a) a keyboard having a front end, a rear end, a plurality of keys each having an uppermost surface, and an uppermost keyplane defined by said uppermost surface of said keys;
• (b) first and second bracket members engagable with the base;
• (c) a support tray comprising:
• a support surface and
• a keyboard stop member comprising a stop wall, said support surface comprising a front portion, a rear portion, a first sidewall, and a second sidewall, such that said stop wall extends from said first side wall to said second side wall and wherein said stop wall is disposed in said rear portion of said support surface, said support surface being adapted to support said keyboard, said support tray being engaged with said first and second brackets such that the keyboard may be orientated in a backward tilted position which is defined by the rear end of the keyboard being disposed below the front end of said keyboard and said uppermost keyplane is tilted backwards, said keyboard stop member being adapted to prevent said keyboard from falling off said support surface when said keyboard is in said backward tilted position;
• and
• (d) a palm rest movably engaged with said support tray from a position at least substantially adjacent said front portion of said keyboard to a position above said keyplane while said rear portion of said keyboard is below said front portion of said keyboard.