it says antmine usb VI2 on the bottom if that helps. Came in pretty unmarked packaging, no instructions. Frankly I'm glad it's going as well as it is so far. One of them is really hot, the other one not so. both have red lights on, but only one (the hot one) has a green flashing light too.
So what have you done to "mine"? Just plug it into a USB hub?
btw, That is a Antminer U2.