Whole Hog 2 Keyboard

Does anyone know what kind of plug is on the external keyboard for the Whole Hog 2?

I'm currently having an issue. I bought a usb keyboard and several adapters to try to get the whole thing to work, however, I can't get an external keyboard to function.

I've currently got a A/T Male to female PS/2 adapter, and then a PS/2 to USB adapter. This isn't working. I've additionally tried a PS/2 keyboard in the A/T male adapter, and this also isn't working. Am I forgetting something? Is my dream of a USB keyboard unatainable?

Thanks for your thoughts.
Related