Intel Server Chassis SC5600LXNA For S5520HC & S5500HCV Server boards. for 10 3.5" Fixed or Hot-swap SAS/SATA drives 4 toolless hot-swap chassis fans Redundant 1+1 high-efficiency 750W PS Tool-less features Front Connectors 2xUSB & 1xOptions front or rear serial port. (Harlan Creek Platform)