I really wish keyboards and mice still used the ps/2 connector.
My motherboard seems to be extremely picky when it comes to what USB devices I have plugged in each of the sockets.
My HHKB Pro 2 is only recognized by the bios when it is in this one connector. Any other USB slot, and its not recognized.
Easy enough, I figured.
But then I had other problems. With the 360 wireless adapter plugged into another slot, the mouse would no longer work (on startup) when it worked fine before. Then I switched the slots around until I found a combination where they both would work.
Now my printer. Every time I plug it in, whether into the front USB ports or the back, the mouse quits working instantly.
So I've just been making sure to save everything before I need to print, then I've been restarting after the print job so I can use the mouse again.