ADC Cinema display keyboard USB not working
Hi,
I have an old Apple cinema display using an ADC (Apple display connector) that is plugged to a converter and DVI/miniDisplay port to a Thunderbolt port to the Mac Pro 2013.
Keyboard and mouse were plugged to the monitor, then the monitor USB cable was plugged to the Mac.
When I removed all cables and simply plugged keyboard and mouse directly to the Mac, the keyboard is completely not responding.
Any idea why?
Shutting down, unplugging cables from ports, reseting the PRAM, trying to load in safe mode is impossible because the keyboard is not working.
Connecting back the original wiring brings the keyboard back to life.
Very strange.