these ps2-usb `` adapter '' be the worst thing to ever come from mankind . why ? all they do be switch over wire to a different plug . they do not `` magically '' make ps2 product usb compatible or the other way around . almost never in the product description be this tell . many people have buy these to be very disappointed that they do not work . on the other hand , if you know you have a compatible keyboard , they work well . Make sure you keyboard state it be compatible with usb-ps2 adapter before buy a adapter ! the work of actually convert format be do by the keyboard , not the `` adapter '' .