How do I troubleshoot common setup issues with this device?

If the power indicator light is off, ensure that the docking station and cable are properly connected to a power outlet or wall socket. Also, verify that all USB ports on the dock are turned back on after encountering hardware incompatibilities by unplugging problematic devices and reconnecting power sources. (Page 17)

From the official HP Laserjet Pro Mfp M426fdw manual, page 17

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