How do I change from a USB connection to a wireless connection?
For Windows users, access your printer utilities from the Start menu, select the printer name, select Printer Setup & Software, and then select Convert a USB connected printer to wireless and follow the on-screen instructions. For Mac users, use HP Utility in Applications/HP to change the software connection to wireless.
From the official HP Officejet 4650 All-in-One Printer manual, page 5
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