How do I completely power off the HP Deskjet 2050 to remove all power?
To completely remove power from the printer, first turn off the product using the On button, and then unplug the power cord. Note that when the product is simply turned off without unplugging, a minimal amount of power is still used. (Page 3)
From the official HP Deskjet 2050 All IN One Printer Series J5 manual, page 3
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