HP LaserJet M5025 Multifunction Printer series - Manual (Page 148)

Analog fax
When the HP LaserJet analog fax accessory 300 is installed, the MFP can function as a standalone fax
machine.
The HP LaserJet M5035X MFP and HP LaserJet M5035XS MFP models come with an HP LaserJet
analog fax accessory 300; already installed. For the HP LaserJet M5025 MFP and HP LaserJet M5035
MFP models, you can order this accessory as an option. See
Order parts, accessories, and supplies
for information about ordering the analog fax accessory.
Install the fax accessory
Use this procedure to install the analog fax accessory if it is not already installed.
1. Turn off the device, and disconnect all of the cables.
2. At the back of the device, remove the formatter cover.
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