Lexmark MS510 User Manual page 21

Additional printer setup
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Open the controller board shield using the green handle.
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Attach the blue plug of the ISP solution interface cable into the blue receptacle on the controller board.
Note: If you have installed a printer hard disk, then you need to remove it. For more information, see
"Removing a printer hard disk" on page 25. To reinstall the printer hard disk, see "Installing a printer hard
disk" on page 22.
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