... ...Physical CharacteristicsInterfaces Supported:PS2, RS232, USBVoltage:DC+5V+/-5%Current:100 mAIdle Current:<40 mAPower Source:Host power or external (RS232) power ... , barcode reader, bar code, scanner, reader, verifier, gun, ATM, POS, auto ID, RF ID, barcode data terminal, CCD barcode scanner / reader ...