The Fax - HP OfficeJet 2620 Series Windows driver refers to the software and drivers required for the HP OfficeJet 2620 all-in-one printer series to support fax functionality on a Windows computer. This driver package typically includes both printer and fax drivers, as well as additional software to manage fax operations, such as sending and receiving faxes from your computer, scanning documents, and printing.

To use the fax feature on the HP OfficeJet 2620, you need the correct driver installed on your computer, which ensures that Windows can communicate with the device's fax function properly. The driver also includes the Windows Fax and Scan feature or other HP-specific fax management software.