Oki T400 - Manuel (Page 11)

Computer Connection
Connection example using Bi-directional parallel interface
Use [Bi-directional parallel interface(sold separately)].
This printer operates by being connected to a computer.
Turn off the power of the printer and connect to the computer with an
interface cable connecting the bi-directional parallel interface connector at
the rear panel of the printer.
* If you are using a different optional interface board, refer to the instructions of
its “Optional Interface”.
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