Case Type 2U rack , Chipset Intel C621 , Socket S3647 , Maximum number of CPUs 2 , SATA 3.0 , 1xPCI-Express 3.0 8x , 2xPCI-Express 3.0 16x , 2xM.2 , 2x15pin D-sub , 3xUSB 3.0 , 1xCOM , 5xRJ45 , Memory type DDR4 , Memory features LRDIMM , Memory slots 24 , PSU Output Power 1600 Watts , 24x2.5" Internal , Cooling & Ventilation System 4 Heavy duty 8cm PWM fans , Colour Black