HP Officejet Pro X551 Printer series - Manual (Page 36)

HP Web Services menu (Officejet Pro X451 models only)
Menu item Sub-menu item Description
Enable Web Services Yes
No
Enables HP Web Services so you can use HP ePrint and the Apps menu.
HP ePrint is a tool that prints documents by using any e-mail enabled
device to send them to the product’s e-mail address.
Use the Apps menu to print directly from select Web applications.
22 Chapter 2 Control panel menus ENWW