Specifications Mfr Part Number: CSE-813MFT-300CB Case Type: 1U Rackmount Color: Black M/B Type: ATX Processor Support: Intel Pentium D (Smithfield Dual Core)/ Pentium Extreme Edition/ Pentium 4/ Pentium 4 Extreme Edition/ Celeron D Processor Drive Bays: 4x 3.5-- SATA Hot-swap Drive Bays Expansion Slots: 1x Full-height/Half-length I/O Expansion Slot Peripheral Drives: Optional 3.5-- 1.44MB Slim Floppy Drive; Optional Slim 24X TEAC CD-ROM Drive Cooling System: 3x 40mm 12-500rpm Cooling Fans Front I/O Panel: 2x USB Ports; 1x Serial Port Power Supply: 300W AC Power Supply w/ PFC Dimensions (WxDxH): 17.2 x 19.8 x 1.7 inch / 437 x 503 x 43 mm