It has the following ports: USB 2.0 x1 and Ethernet x3. With this one device, you can use the functions of an AirMac Extreme Base Station that adopts the 802.11n draft 2.0 specification, a print server, and a file server. (Quoted from the website) The box says 1TB, but the main unit is 500GB. I don't know how to use it, but I have confirmed it is working and completely erased the data. The included accessories are only those in the photos.