Logitech Pointing Device Hardware Information
Product Support Document # 1410

The following are the pin-outs for  Logitech mice as documented in the 
Logitech Mouse Technical Reference and Programming Guide.  Note that the 
wire colors are provided only for the bus mouse.  Wire colors are not 
available for serial or pix-port mice.

Bus Mouse

The Logitech bus mouse has a male D-subminiature or a male miniature 
circular connector, similar to the Microsoft InPort connector.

Wire     Mini-DIN       Logitech             Microsoft
Color	   Pin	     P-Series Signal       InPort Signal	
Black	    1             +5V                  +5V
Brown       2              X2                   XA
Red         3              X1                   XB
Orange      4              Y1                   YA
Yellow      5              Y2                   YB
Green       6              Left                 SW1
Violet      7              Middle               SW2
Gray        8              Right                SW3
White       9              GND                  Logic GND
SHIELD    shell            chassis              chassis