can't record from drum machine
I bought a iConnect Mio Midi to USB cable interface to record from a Roland T-4 drum machine to Garageband.
The drum machine has only one plug for the midi (Midi out) so I connect the cable Midi In and the USB to the Mac.
When I connect, Garageband detects the Midi inputconnection, but when I hit the drums, no signal is detected. I changed on Preferences the Input Device.
What should I do? are they compatible?
MacBook Pro with Retina display, OS X El Capitan (10.11.5)