Supermicro SuperChassis CSE-815TQ-R700UB, Black 1U SC815 Ui/o Chassis with Redundant 700W Case Type: 1U Rackmount M/B Type: Supports E-ATX Motherboard, max size upto 12.0 x 13.0 inch Processor Support: Single/ Dual Intel Xeon 5500 Series Processors (Tylersburg/Nehalem)/ AMD Opteron Processors Drive Bays: 4x 3.5" SAS/SATA Hot-swap Drive Trays Peripheral Drives: Slim DVD-ROM Drive (Optional) Expansion Slots: 1x Full-height Universal I/O Expansion Slot; 1x Full-height & Full-length PCI Expansion Slot; 1x Low-profile PCI Expansion Slot (Riser Card Required) Front I/O Panel: 2x USB & DB9 COM Ports Tray (Optional - In Place of Floppy Drive)