PAD (13) jack (standard stereo-phone plug; left = trigger, right = rim switch)PAD (14)/(15) and PAD (16)/(17) jacks (standard stereo-phone plug; left = trigger, right = trigger)HI-HAT CONTROL jack (standard stereo-phone plug)FOOT SW jack (standard stereo-phone plug)OUTPUT L/MONO and R jacks (standard phone plugs)PHONES jack (standard stereo-phone plug), AUX IN jack (standard stereo-phone plug), MIDI IN and OUT connectors, USB TO HOST port, USB TO DEVICE port, and DC IN.