Features: Support REG ECC server memory. Support for M.2 NVME for M.2 SATA3.0 SSD. High compatibility for a higher experience. All solid capacitors, fine workmanship, professional stability. The power socket has 2*8-pin,1*24-pin power plug or. Specifications: Processor Series: Xeon E5 2680 V3 (12 cores/24 threads) Main Frequency: 2.5GHz 3rd level cache: 30MB Technology: 22nm Power consumption: 120W Type: REG ECC (Server Memory) Frequency: DDR4 2400MHz Chipset: for Intel X99 Model :SZMZ CPU socket: LGA 2011-3 CPU supported: for Intel series with LGA 2011-3 socket (Xeon E5 2620 2630 2640 2650 2660 2670 2680 2690 1650 1660 V3 V4 series) Memory socket: 8 * DDR4 Size:304x300mm/11.97x11.81in Max Memory: Support 4 Channels Architecture up to 256GB Memory type :REG ECC/ECC server (The desktop can'for t work with the server , it may have the compatibility problems.) Note: No retail package. This product with button battery, without CPU. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1PC x X99 Dual Motherboard