Lexmark C510 Guide D'installation page 23

Step 5: Set up the optional
Attaching the optional duplex unit
CAUTION:
If you are installing an optional duplex unit
sometime after setting up the printer, turn the printer off
and unplug the power cord before continuing.
Note:
When you add or remove the optional duplex unit,
remember to update the printer configuration through your
printer driver.
duplex unit
Set up the optional duplex unit
Your printer supports an optional duplex
unit which lets you print on both sides of
a page.
1
Unpack the duplex unit and
discard the packing material.
2
Use a flathead screwdriver to
carefully remove the connector
cover, and the upper and lower
duplex covers, from the back of the
printer.
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