thomann millenium mps-750 - Rear Panel Connections: Triggers, USB, and Power

20 [EXT1]
Input socket for connecting an external trigger.
21 [EXT2]
Input socket for connecting an external trigger.
22 [USB]
USB port for connecting a PC with USB-MIDI interface.
23 [DC 12V]
Connection socket for the power adapter.
24 [POWER]
Main switch to turn the device on and off.
Connections and controls
MPS-750
23