Package xorg-drv-mouse: Information

mouse is an Xorg input driver for mice.  The driver supports
most available mouse types and interfaces.  USB mice are only supported
on  some OSs, and the level of support for PS/2 mice depends on the OS.

The mouse driver functions as a pointer input device, and may  be  used
as  the X server's core pointer.  Multiple mice are supported by multi-
ple instances of this driver.