IIncludes 8x 3.5" disk trayIncludes 2x heatsinkIncludes 2x PSUDOES NOT INCLUDE RAILS1. Dual socket B2 (LGA 1356) supports Intel® Xeon® processor E5-2400 v22. Up to 384GB DDR3 1600MHz ECC R/LRDIMM; 12x DIMM slots3. 1 UIO, 4 (x4) PCI-E 3.0 (2 FHFL, 2 LP), 1 (x8) PCI-E 3.0 (FHFL)4. Intel® i350 Dual port Gigabit Ethernet Controller; 2x LAN ports5. 8x 3.5" Hot-swap SAS/SATA HDD bays for Customizable Storage6. 740W Redundant Power Supplies Platinum Level (94%+)