Lexmark CS737
Turn off the printer.
Apply isopropyl alcohol to a damp, soft, lint-free cloth, and then wipe the surface around the USB port.
Install the wireless module.
Notes:
Check for a gap between the module and the printer, then attach the spacer module if necessary.
Attach the NFC card.
Turn on the printer.
Connect your printer to wireless networks by adding the MarkNet N8370 Wireless Print Server on the controller board.
Learn how to install the MarkNet N8450 Wireless Print Server on your printer.