External Device Connection Method Use a D-Sub15 cable to connect with an external device. Connect the cable to the extended I/F connector on the printer rear. Extended I/F connector Roll Rewinder or Roll Unwinder Connect the rewinder's I/F to the Extended I/F connector. Prepare a power supply for the roll rewinder that is separate from the printer's power supply. Roll rewinder Connect the roll unwinder's I/F to the Extended I/F connector. Prepare a power supply for the roll unwinder that is separate from the printer's power supply. Roll unwinder Connect the rewinder's I/F to the Extended I/F connector. Connect the roll unwinder to the roll rewinder. Roll unwinder 18 Roll rewinder