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3. Turn the printer power Off (O) and unplug the printer power cord.
4. Disconnect all cables from the back of the printer.
5. You must access the printer system board. Refer to your printer User's Guide
and follow the instructions on how to access the printer system board. After
accessing the system board proceed to step 6.
6. Locate the Optional Firmware SIMM Connector on the system board. Refer to the
figure below matching your printer. Hold the option with the connection points
pointing toward the system board and the notch as shown in the illustration for
your printer. Insert it all the way into the connector at a 45° angle.
Optra S/Se
Notch
Optra K
Notch