Test Keyboard and Video Element
   Press and hold the Left Ctrl and Shift keys, then press the Hold key.
This brings up a test screen with characters and a keyboard (like those used in PS/2 diagnostics). 

   The 8x2 combination above the left side of the on-screen keyboard is the Keyboard ID.

KB Type               KB ID
US English            10111111 10111111
 (W/numeric keypad)
US English            10000001 10000000
 (W/o numeric keypad)

Communications Problems