This listing is for Butterfly Labs 725 ASIC miner. I used it for over a year, it worked reliably and delivered up to 750 GH/s. Then one of its parts burned out and it stopped working. In the last photo, a comparison is shown, with the burnt part on the left and the same part before it burnt on the right. Cosmetically the miner is in good condition. Comes with a long USB cable. 100% authentic. Fast dispatch by priority mail.