My guess is that it will not work. The video should be ok but ADB is a serial chaining protocol that is way different from PS/2 mouse and keyboard ports.

I tried it a few years back but could not get it to work with PS/2 and bought an ABD KVM box (Dr. Bott).

I was using an ADB to PS/2 converted that worked ok stand alone but when plugged into a KVM switch it would hang.