Solved: C4780 has no wireless option in hp utility - HP Support Community - 5767771
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HP Photosmart C4780 Driver - Printer Drivers Download
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HP Photosmart C4780 All-in-One Printer, Pavilion dv6-1263cl Entertainment Notebook PC, and Linksys WRT160N Wireless Router Bundle - Setting up the Wireless Mobility Bundle | HP® Customer Support