Hello @gmarler,
Thank you again for sharing more about the keyboard and LED troubles.
I am sorry to hear that it may be hard to gather more support data about the WASD keyboard. I would certainly expect a standard USB HID keyboard to work fine on the P2ADDH462-KVM-SWITCH. Testing with another keyboard could be worthwhile sanity check, and might help us isolate an issue with the KVM port too.
This may be a good time to consider trying the KVM reset / Power cycle steps that I have added to this forum earlier.
This modified power cycle has helped me resolve USB connectivity many times in the past.
Regarding the power for the USB port. I suspect USB 2.0 power would be more than enough power for the KVM to recognize the port correctly. Between the two connections tried on the MSI system I suspect the USB A connection from the computer case port to the KVM may be more reliable for testing.
I am curious if the steps linked here help, or if you find any clues in the logs after your test. If the issues persist for you after these steps we may have to consider the KVM further. I can reach out to you directly by email too.
Sincerely,
@DavidF