So let's say I have a wireless keyboard/mouse system. The receiver has a power plug (to charge mouse; it is a cradle for it as well as receiver), a USB plug, and a PS/2 mouse connector. All functions work with USB only, it seems.
Now, suppose the keyboard eats batteries like mad, but since it's just sitting on the desk, it would be more practical to make it wired. This keyboard is a favourite, and it's not cost effective (nor would I enjoy it) to replace it with any wired keyboard on store shelves today.
What would be required to convert the keyboard (ignore the mouse, it is not needed) to be wired?
I have a USB cord out of a now-dead mouse which can be used, if the wire can somehow run directly from keyboard to PC. If the receiver must be connected somehow, how would I go about wiring this, since the goal we are trying to accomplish is to eliminate the batteries?