Many moons ago, I picked up several XBox Fighter panels on clearance from redoctane. I replaced the joys/buttons with Happ goods and picked up several XBox to USB adaptors.
I gave these out as gifts to nephews and GF's kids.
One of the xbox pads inside the controller went bad so I replaced it with a GP-WHiz. Thus....the child has no use for this adaptor any longer.
How 'bout $12 shipped to your door in continental US or make offer.
I've got to scare up the driver disk but later drivers are available for download on the web.
P.S. The buyer is also welcome to the xbox gamepad card, cable, wires with disconnects attached if they want to troubleshoot otherwise I'll just pitch that in the trash.