400 PPI Serial Mouse and Epson Equity LT 386/SX (67863)

The information in this article applies to:
    Microsoft Mouse driver for MS-DOS 6.x
    Microsoft Mouse driver for MS-DOS 7.x
    Microsoft Mouse driver for MS-DOS 8.x
    Microsoft Mouse driver for MS-DOS 9.0

This article was previously published under Q67863


The 400 ppi serial mouse may not install on the 9-pin serial port of an Epson Equity LT 386/SX. Epson America has confirmed this and offers a patch for this problem. You can obtain this patch from your Epson dealer.

Note: Not all Epson dealers may be aware of this problem, but they should be able to get the patch from their main Epson supplier.

According to two customers, the Microsoft BallPoint Mouse version 1.0 (using driver version 8.0) installs on COM1 if you use the /Y switch. Otherwise, the mouse locks the computer.

This information applies to the Microsoft Serial Mouse for MS-DOS systems.

The Epson product included here is manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Modification Type: Major Last Reviewed: 9/23/2003
Keywords: KB67863