Ebay Item Number: 180299691454
Had one of these brought to me by a friend, had bought it on Ebay in order to run an AV television from a PC. at $10 + postage, it looked a bit too good to be true as typcial USB to video devices are about $70 or so When plugged into a PC the PC didn't detect anything, or give the usual sound when you connect a USB device.
Measuring it, it appears that the USB Data + / - and +5v leads are brought straight out to RCA plugs ! (5v was measured from the tip of the video plug to shield)
The seller, when contacted, claimed "it is only suitable as an AV lead for some TV set top boxes".
As far as I knew, USB devices had to conform to USB standards and be registered, and the system couldn't be used for "just anything" like this.