Intel C621 , S3647 , CPU's Xeon Scalable , Maximum number of CPUs 2 , EATX , 4xPCI-Express 3.0 16x , 2xU.2 , DDR4 , 2933/2667/2400/2133 MHz , Memory features RDIMM/LRDIMM , Memory slots 16 , 1x15pin D-sub , 2xUSB 3.0 , 2xSFP+ , 3xRJ45 , Video , RAID SATA 0, 1, 5, 10 , Included Accessories 1 x I/O shield1 x Quick start guide2 x SlimSAS for 8 x SATAIII 6Gb/s 600mm cables