That same model should behave as a HID device by default. The one I received was programmed to be the “1” and “2” keys initially. I had to use the provided software to reprogram the unit to have the keys run a macro to do the key presses to switch the kvm input (scroll lock, scroll lock, 1 or 2). You can use a keyboard tester to validate the re-program worked correctly. Then make sure you plug to macro keyboard into one of the HID ports on the kvm.
Definitely did all that. And it will not switch my 10gbps 2computer/3monitor L1T KVM.
I also bought the 4-key keypad confirmed to work in this post – and I’ve had absolutely no luck with it, either. (I can’t get the keys to input anything at all when the keypad is plugged into a HID port, let alone switch my KVM.) I’m really confused why everyone seems to have no problem with these keypads, but my KVM apparently doesn’t recognize them as a HID device.