A word of advice on mice:

Its mostly trial and error to get it right. Unless hotplug enables it
(and you're willing to wait for hotplug, unlike me) you have to find
the right protocol.

In my case i have a wireless logitech mouse through the PS/2 port that
needs the usb mouse protocol to work. Its weird like that sometimes.
I would try imps2 first, but its repeated trial and error unless you
know ahead of time.