Hardware Change to 400ppi Mouse Port Cable

ID: Q69733

The information in this article applies to:

Microsoft Mouse Driver for MS-DOS, versions 6.x, 7.x, and 8.x
Microsoft Serial-PS/2 Mouse

SUMMARY

The PS/2-style mouse-port connecting cable for the 400ppi Microsoft Serial Mouse has been changed. The round, miniature DIN connector that plugs into the mouse port now only has four pins.

The arrangement of the pins is illustrated below:


                        |  |
                    5   |  |   (6)*
                         --
                     3        4
                        1 (2)*

* Pins 2 and 6 are not present.

The pins are arranged in a semicircular fashion around a square plastic post. The pin assignments are as follows:


   Pin 1 = Data
   Pin 3 = Ground
   Pin 4 = Power
   Pin 5 = Clock

Originally all six pins were present, but pins 2 and 6, which were unused, were removed. The "9-pin" D-shell connector on the mouse side of the cable continues to display only four active pins.

Additional query words: noupd


Keywords          : 
Version           : 6.x 7.x 8.x
Platform          : MS-DOS 
Issue type        :

Last Reviewed: August 8, 1999