I'm trying to use the PS-94 keyboard to control the instruments in Garageband for iPad.
I plugged the powered 4-port USB hub into a wall outlet, and plugged the keyboard as well as the iPad each into one of its USB ports. The keyboard powers on but it does not seem to send any MIDI signal to Garageband.
(By comparison, if I use Garageband on my iMac and plug the PS-94 into the computer's USB port, I can control Garageband instruments with it.)
Am I doing it wrong? Is there a way to make this work? How?