What keyboards and mice are compatible with HP9000
Michael Piotrowski has assembled a web page that lists PS/2 and USB
keyboards and mice that have been reported to work on HP9000
As for serial mice, most Logitech or Microsoft models should work. The
following entry would need to be in /etc/X11/X0devices:
Be sure to change the device file if needed, and chmod it to 666 (the
Xserver runs as 'daemon', not 'root', and it must have read/write access
to the device file).