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oldmouse.com

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oldmouse.com

Mouse Systems M-2 Mouse

This M-2 mouse was marketed by Mouse Systems as PC Mouse. The original pearl white has aged to computer greige with tan/grey buttons. M-2 PC Mouse came bundled with Pop-up menu software. As an improvement on the M-1, this mouse does not require callibration every time it is turned on.

Its rectangular interface block has a triangular projection for the fixed cord to the mouse, beside a port for the jack of the power supply. It connects to the computer's serial port. On the mouse bottom, the two oblong holes for the LEDs are parallel, not slanted as on the M-1 model.

Mouse Systems logoThe MOUSE SYSTEMS brand on the back is accompanied by a holey cheese wedge icon, as does the A+ Mouse for the Apple IIc.



A 7 3/4" x 9" gridded metal desk pad came with the M2 121043. It is number 400207-003-REV. 3.

Mouse Systems M-2 PC Mouse
Mouse Systems M-2 PC Mouse on its desk pad.

Mouse Systems M-2 mouse
Mouse Systems M-2 mouse with the the MOUSE SYSTEMS brand on the front. (This one is SN: M2 121576.)

Mouse Systems marketed an M-2 mouse with a DB-25 hole plug with only its MOUSE SYSTEMS name on the front. The corporation also made an OEM Model M-2 optical mouse, which had only two square buttons, for PCjr IBM computers.

Connecting the mouse to the PCjr computer.
Connecting the mouse to the PCjr computer from PCjr Mouse Setup Guide by Mouse Systems 1985.

The proprietary PCjr Mouse cable splits off into the serial plug that plugs into the computer and the little square plug that connects into the light pen port, labeled LP, at the rear of the PCjr computer. This provides power for the mouse. Like the A+ Mouse, this one needs no external power supply.

Mouse Systems M-2 aka PC Mouse with its interface block and a Belkin DB-25 to DE-9 serial adapter.
Mouse Systems M-2 aka PC Mouse with its interface block and a Belkin DB-25 to DE-9 serial adapter.

The interface block of the M-2 PC Mouse and a serial DB-25 to DE-9 adapter.
The interface block of the M-2 PC Mouse and a serial DB-25 to DE-9 adapter.

Mouse Systems M-2 PC Mouse
Mouse Systems M-2 PC Mouse

Bottom of the Mouse Systems M-2 mouse sold as the PC Mouse
Bottom of the Mouse Systems M-2 mouse which sold as the PC Mouse.

The label on the bottom of this PC Mouse reads:

U.S. Patent 4364035
MOUSE SYSTEMS (cheese icon)
Santa Clara, CA 95051
M2 100043
FCC ID CWE7VT2
Assembled in Mexico 
IMEC 
(inside says REV. C)

Connecting the Mouse to the Apple IIc Computer
Connecting the PC Mouse to the IBM PC computer from PC Mouse Setup & Users' Guide by Mouse Systems 1984, 1985.

M-2_connect.gif