Includes 4x 3.5” disk traysIncludes 2x heatsinksIncludes 2x PSUsDOES NOT INCLUDE OUTSIDE RAILS1. Dual socket R3 (LGA 2011) supports Intel® Xeon® processor E5-2600 v4†/ v3 family; QPI up to 9.6GT/s2. Up to 2TB† ECC 3DS LRDIMM , up to DDR4- 2400†MHz ; 16x DIMM slots3. 2x PCI-E 3.0 x16 (FHHL) - AOC support4. Intel® X540 Dual port 10GBase-T5. 4x 3.5" Hot-swap SAS/SATA HDD Bays for Customizable Storage6. I/O ports: 2x SuperDOM, 1x VGA, 1x Serial, 6x USB 3.0 (4 rear)7. 750W Redundant Power Supplies Platinum Level High-efficiency