This Apple Extended Keyboard II (M3501) is in full working condition, with a small chip on one side of the plastic case, as shown in the photos.
It will come with an ADB-to-USB converter, a 10cm USB-C to USB-A cable, and a 1.8 metre 4-pin mini DIN cable (s-video cable), so it will be ready to use straight away on a modern pc or tablet.