Material purchased during a special promotion (-30%). Few powerful and limited in its capacity (including the Internet) in relation to other products, but whose price is significantly higher. As a home server storage / backup two PCs, with 2 x 2TB (installed in October 2011), it serves its purpose with application. One downside, which is probably not his fault, I can access only 10 MB / s via the "box" of my ISP (although recent and warranty 1 GB / s) because its interface is mandatory (that's the problem ...). What takes a little time writing large files like "TV recording" but read access is fluid.