TESTED Monterey Staff K2AX AT XT Mechanical Keyboard 5-DIN

I plugged this keyboard in using my DIN adapter. Sadly, nothing happened while plugged into AT mode. In XT mode, the Num and Caps-Lock keys function, toggling the green indicators. However, I could not get the keyboard to output beyond that. Unsure if this is a compatibility issue or if the keyboard is non-functional. Outside of this, the keys are in good shape. The chassis has some scratches. I gave it a quick cleaning, but it would benefit from more elbow grease. Angle brackets work well, and cord has no frays.
I've got more vintage computer hardware and software at my store and happy to bundle shipping.