I had issues with this has well. The pools for this thing suck. I wouldn't mind mining alt coins. At the time though I think I had success with dem but still didn't have the full hashing power I expected. I put in a wrong setting with my controller and thought I was screwed. Spent several frustrating hours trying to figure it out. Had to hook the controller to the computer to reset the device. Resetting was weird because there are no clear instructions on it. I hooked to the computer with Ethernet cable and had to press the reset button off and on several times before it reset and gave a really weird light reading. I then was able to reach it at the factory settings it shipped with.