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hp laptop ?

I recently bought a HP laptop, but I got this accessory , which is a cable with a 3.5mm jack on one end and red led on the other end ? I cannot find my manual , so I dont know what the cable is for ! the laptop is a pavillion dv9000

Public Comments

1. Sounds like an infrared connection. That's the only thing I can think of that it might be.
2. No model given, so can't aswer except to recommend you go to HP.com and look lup your exact model. Could the cable have come with a camera or other device? There has to be something besides just the LED on the end! The LED would be there to indicate connection status.