Heya,
I bought one as well. However, I realized that it kept on saying incorrect device overnight. Just today figured I was going to get to the bottom of it. The hash rate is not an issue for me, Mine runs around 40 - 58 Gigahertz /s. I was having an issue with detecting it at first.
Would like to see why it's having these issues though. there is four screws at the bottom of mine, and when I put something to lay on top of it while upside-down, it HAS not since, had a detection error in cgminer? I'm not a big hardware expert or anything of this sort, and just a simple 3D artist, so not sure what's up with that...
all in all it doesn't matter to me, everyone in my house seems to want to get me a Zeusminer volcano or a C1 for my upcoming birthday, oh goody.... I'm sure as time moves on it will all be figured out lol.