Case Type 1U rack , Built-in CPU model Xeon D-2146NT , 4xPCI-Express 3.0 8x , 1x15pin D-sub , 2xUSB 3.0 , 2xSFP+ , 2xRJ45 , Memory type DDR4 , Frequency speed 2666/2400/2133 MHz , Memory features RDIMM/LRDIMM , Memory slots 4 , PSU Output Power 400 Watts , Cooling & Ventilation System 5x 40x40x56 mm 13K-11K RPM Counter-rotating Fans