It doesn't work at all. The drive is recognized by the USB driver but the RAID utility can not find it or initialize. I have 20 years experience with PC, build my own, have done software and hardware raid under Windows and Linux. This thing should just work. Technical support has hung up on me after being on hold for 15 minutes twice. So I'm guessing they just have so many problems that they are dumping their call queues to avoid busy signals.Your going to be wasting a lot of time with something that really should be a non event.Stay away from this product.