Case Type 1U rack , Built-in CPU model Xeon D-2177NT , 2xPCI-Express 3.0 16x , 1x15pin D-sub , 2xUSB 3.0 , 2xSFP+ , Memory type DDR4 , Memory features RDIMM/LRDIMM , Memory slots 4 , PSU Output Power 500 Watts , 2x2.5" Internal , 2x2.5" SATA Hot-swap , Cooling & Ventilation System 4x 40x28mm PWM fans (up to 6)