How do I connect the HP OfficeJet Pro 8720 to a wireless network?
On the printer control panel display, touch or swipe down the tab at the top of the screen to open the Dashboard, touch Wireless, then touch Settings. Touch Wireless Settings and either touch Wireless to turn it on, or use the Wireless Setup Wizard or Wi-Fi Protected Setup and follow the onscreen instructions. For more help, visit www.hp.com/go/wifihelp.
From the official HP Officejet Pro 8720 All-in-One Printer manual, page 3
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