REAR PANEL CONNECTIONS1. PSU connector – allows a power supply unit (PSU - not supplied) to be connected for providing 9V DC from the mains2. Power select switch – sets the power supply between DC, off and USB3. USB connector – allows the supplied USB cable to be connected for linking to a computer. This connection providespower as well as data flow4. Sustain pedal – allows a sustain pedal (not supplied) to be connected5. Expression pedal – allows an expression pedal (not supplied) to be connected6. MIDI In/Out – two standard MIDI ports allow connection to additional MIDI equipment such as hardware synthesizersPOWERING THE SL COMPACTThe SL Compact can be powered in one of two ways. One option is to connect the keyboard to your computer using thesupplied USB cable, which will supply power to the device, then set the power select switch to USB (extreme right position).The other option is to connect a PSU (not supplied) and set the power switch to DC (extreme left position) to power thekeyboard from the mains. The required PSU output specs are 9V, dc, 600-1000mA, center pin positive.5ComputerUSB cableUSB portMAINS9V DC PSU