This is an I-O Data USB-connected hard drive that supports mirroring. https://www.iodata.jp/lib/product/h/2109.htm I have confirmed that it works without any problems before listing it, and the data has been initialized. Includes power cable, AC adapter, and USB cable. All included accessories are shown in the photos. The manual can be found on the website above. It has been upgraded with two 1TB HDDs and configured in RAID1. Would you like it for storing photo data, etc.?