The SuperSwitch is powerful and versatile, yet low cost, microprocessor controlled switch. This peripheral- sharing unit interconnects up to nine computers and peripherals using common serial and parallel interfaces. The SuperSwitch allows several computers or terminals to have shared access to peripheral devices, such as printer, plotter, modem, or host computer. Peripheral device selection is done either automatically by sending data to default destination or by sending code to select new destination. Any port may communicate to any other port. Pairs of ports may communicate simultaneously.