Supermicro 560 Watt 2U Rackmount Server Chassis (CSE-825TQ-563LPB) Form Factor: 2U chassis support for motherboard size 12" x 13", 13.68" x 13" E-ATX and 12" x 10" ATX Expansion Slots: 7x low-profile full-length expansion slots Drive Bays: 8x 3.5" SAS/SATA Hot-swap drive trays SAS or enterprise SATA HDD only recommended SAS/SATA Backplane: 1x 2U SAS/SATA backplane with Enclosure Management Peripheral Drives: Slim DVD-ROM drive (Optional) Fans: 3x 80mm 6300 RPM hot-swap PWM fans Power Supply: 560W AC power supply with PFC (24-pin)