I have the oem microsoft pro keyboard that only comes with usb (didn't know that when i ordered it from newegg) and it works fine except when trying to boot off a floppy. Apperently in dos mode or the part where it ask you to either boot with cd-rom support ot not, usb is not working. This is strange because i can use my usb keybaord to load bios setup and it works fine there. Anyways if there is a usb to ps2 converter for a keyboard like there is for the mouse than that would safe me alot of headache.