ESI M8U eX, USB 3.0 MIDI Interface, 16 MIDI ports, Each port can be used as input or output, Automatic input and output detection, Multicoloured LEDs for status display, Additional functions allow the interface to be used as a thru or merge box, Power supply via USB or with the mains adapter included, Class compliant from Windows 7 and macOS (32- / 64-bit), Dimensions: 325 x 145 x 45 mm