HP Deskjet 3740 series printer User's Guide

1.Print cartridges

1.USB port

4.2 Power button and light

The Power button turns the printer on and off. It can take a few seconds for the printer to turn on after you press the Power button. The light on the Power button flashes when the printer is processing a job.

1. Power button and light

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HP 3740 manual Power button and light