Citizen CT-E601 Mode D'emploi page 27

Rear connectors (serial interface example)
1: Interface connector (serial, USB, etc.)
Connect to the interface cable.
2: Cash drawer kick-out connector
Connect to the cable from the cash drawer.
3: Power connector
Connect to the AC adapter cable.
4: USB connector
5: USB power supply port
Supply power to a USB device.
5 4 3 2
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