Product Features: Form Factor: Extended ATX; Chipset: Intel 5520; Compatible Processors: Intel Xeon; Storage Controller Type(s): Serial ATA II x 6; Expansion Slots: 1 x PCI Express 2.0 x16, PCI Express x8 x 2; RAID Support: RAID 0, RAID 1, RAID 10, RAID 5; Chipset Family: Intel; Memory Type: DDR3 SDRAM; Number of Memory Slots: 18 x 240 Pin DIMMs, 18 x DIMMs; Supported RAM speeds: 1066 MHz, 1333 MHz, 800 Mhz; Chassis Type: Server Minimize