Built with durable SGCC steel, tough cases meant to last for several builds without fail. The VSK4000-U3 series also meets Thermally Advantaged Chassis (TAC) 2.0 guidelines and is upgraded with two USB 3.0 ports, nine drive bays, and seven expansion slots. | Antec | | VSK4000E-U3 US SGCC Steel ATX Mid Tower Computer Case | Black | Best Buy