USB on a digibox?

Can someone please explain what the USB port on the front of my Sky+ digibox is for? Was hoping I would be able to copy recorded programs to a USB stick.

[B]Only[/B] for updating firmwares and playing mp3/jpeg, AFAIK.

Twin High speed data ports for future connectivity upgrades.

…which means not much.
You can only “transmit” video directly or later from recordings (hdd) via scart.