How do I set up a wireless connection on the HP OfficeJet Pro 8720?
On the printer control panel display, touch or swipe down the tab at the top of the screen to open the Dashboard, touch Wireless, and then touch Settings. Then touch Wireless Settings and either touch Wireless to turn it on, or touch Wireless Setup Wizard or Wi-Fi Protected Setup and follow the onscreen instructions to make a wireless connection. (Page 3)
From the official HP Officejet Pro 8720 All-in-One Printer manual, page 3
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