Citizen CT-S851 Mode D'emploi page 19

Rear connectors
Interface connector
(serial, parallel, USB, etc.)
Interface connector (serial, parallel, USB, etc.)
Connects to the interface cable.
The serial interface board is equipped with a DIP switch.
Cash drawer kick-out connector
Connects to the cable from the cash drawer.
Power connector (AC adapter type)
Connects to the AC adapter cable.
External device connector
Connects to the cable from an external device.
*Remove the protective seal from the external device connector to use it.
AC inlet (built-in power supply type)
Connects to the AC power cord.
Cash drawer
Power connector (AC adapter type)
kick-out
connector
AC inlet (built-in power supply type)
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External device connector
Protective seal