I purchased a KD9150 a few years ago from Acnodes Corp. and after years f use, the keypad finally went out on me. I purchased a brand new unit, but now the black box KVM switch is not compatible to the new unit because the new unit requires USB and the black box only has PS/2. I connected the rack console to a computer and it works fine, but when I add the black box KVM switch it doesn’t seem to work. I have tried using the USB to PS2 adapter and it still doesn’t work?? Any tips on how I can get this to start working???