Just got the cabling to try a USB computer keyboard.   What I have is a slimline budget QWERTY keyboard with a USB a connector that I’ve used with another Eurorack module, the Teletype.  First tested it with my computer, using a pair of type A to microUSB adapters so that I could verify that my microUSB adapter is working.   It works, checked it in two ways– Num Lock key causes the num lock light on the keyboard to illuminate.   Second, opened up Notepad and typed keys on the keyboard and it’s working.

With the Misha though, neither of the two tests work– num lock does NOT turn on the num lock light, and typing keys does nothing.

It rather looks like my USB port on the Misha is non-functional…