Intel Server Chassis SC5600BRPNA, For S5520HC & S5500HCV Server boards. Support for 10 3.5 Fixed or Hot-swap SAS/SATA drives, 3 fixed, non redundant chassis fans, Redundant 1+1 high-efficiency 750W PS, Tool-less features, Front Connectors 2xUSB & 1xOptions front or rear serial port. (Harlan Creek Platform)