Case Type 1U rack , Built-in CPU model Xeon D-1528 , SATA 3.0 , 1xM.2 , 1x15pin D-sub , 2xUSB 3.0 , 5xRJ45 , Memory type DDR4 , Frequency speed 2133/1866/1600 MHz , Memory features UDIMM/RDIMM/ECC , Memory slots 4 , Cooling & Ventilation System Passive CPU heat sink and 2x 40mm chassis fans , Colour Black