Epson AcuLaser C8600 Reference Manual page 225

9. Fasten the inverter with the provided screws, then reattach
the larger plastic piece removed in step 7 after attaching the
cable to the connector.
10. Attach the Duplex Unit output guide onto the printer as
shown below, then connect the cable to the connector. Finally,
conceal the connection using the provided connector cover.
Using Options
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