HP LaserJet 3300 Multifunction Printer series - USB light OFF

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USB light OFF

If the USB light is OFF, it means that the print server’s USB connection is not operational. This is
OK before the print server finishes starting up (whether or not a USB cable is attached). If the light
remains OFF after startup, then the print server may be faulty.

Restart the print server by detaching the power cable and re-attaching it. Wait for the Power/Status
light to stop blinking (when the self-test finishes).