iConnectivity ICP2NA Optional Power Transformer for iConnectMIDI2+ For use with iConnectMIDI2+ to power the device and enable iOS charging Input Voltage Range: 100V RMS to 240V RMS, Input Frequency: 50Hz / 60Hz Output Voltage: 6V +/- 0.15V DC, Rated Power Output: 18W (min), Rated Supply Current: 3A (min) Over voltage protection (shutdown): 110% to 150% DC Plug Type: 2.1mm ID x 5.5mm OD, Positive Center, Barrel length 12mm.