HP Officejet 350 All-in-One Printer - Manual (Page 75)

Sending PC Faxes
You can use Eclipse Fax SE to send a fax directly from your PC,
instead of from the device, and you can use the AutoPrompt to fax,
copy, and scan paper documents.
Preparing to send a fax (Send Setup)
Before using Eclipse FAX SE (or any Windows application) to send
faxes, review the setup information, preinstalled at the factory, to
make sure it is correct. If you need to modify current settings such as
Resolution, Cover Page, or New Page Paper Size, follow the steps
below.
1. Open Eclipse FAX SE.
2. Choose Send/Setup from the menu bar. The Send Fax Setup dialog
box displays.