I recently received a DVR from the DirecTV. I had subscribed for a new service for my Home Theater system. Now I had seen a USB port from the front panel. I did not understand why it is for. As the set top box can be connect to my pc via Tv Tuner card so what is the use of usb port. Can I control the set top box via usb. That means is it possible that I can attach it to my computer and control it. What more can I do with it. Thanks in advance.