Does the HP DeskJet 3755 support wireless printing?
Yes, the HP DeskJet 3755 has built-in Wi-Fi 802.11b/g/n and supports HP ePrint, Apple AirPrint, and Wireless Direct Printing. Note that wireless operations are compatible with 2.4 GHz routers only and wireless direct may require a driver or app to be installed on your mobile device or PC. (Page 2)
From the official HP Deskjet 3755 All-in-One Printer manual, page 2
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