How do I set up the printer for the first time after powering it on?
Connect the power cable to a grounded AC outlet, turn on the printer, and wait for it to initialize. On the control panel, set the language, date/time format, and time zone. For advanced configuration of network-connected printers, visit www.hp.com/support/ljM507. (Page 4)
From the official HP LaserJet Enterprise M507 Printer manual, page 4
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