Fujitsu FP-510II User Manual page 24

For a unit with serial and parallel interfaces
Insert
Direct Current
(This symbol indicates "Direct Current".)
Interface connector
(Serial interface)
Power connector
Drawer kick connector
Connector cover
Insert
Power connector
Drawer kick connector
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Serial interface cable
* Secure the connector with
screws after making the
connection.
Parallel interface cable
* Secure the connector with
clasps after making the
connection.
Interface connector
(Parallel interface)