Case Type 2U rack , Chipset Intel C621 , Socket S3647 , CPU's Xeon DP , Maximum number of CPUs 2 , SATA 3.0 , 1xPCI-E , 6xPCI-Express 3.0 8x , 1xPCI-Express 3.0 16x , 1x15pin D-sub , 4xUSB 3.0 , 3xRJ45 , Frequency speed 2666/2400/2133 MHz , Memory features RDIMM/LRDIMM/ECC , Memory slots 12 , PSU Output Power 1200 Watts , 2x3.5" Internal , 8x3.5" SAS/SATA Hot-swap , Cooling & Ventilation System 3 Heavy duty 8cm fans with PWM fan speed control , Colour Black