Supermicro SuperWorkstation SYS-5039D-I ( X11SSL-F, CSE-731i-300B) ( LGA 1151, E3-1200 v6/v5, Intel® C232 chipset, 4xDDR4 Up to 64GB Unbuffered ECC UDIMM, 1 PCI-E 3.0 x8 (in x16), 1 PCI-E 3.0 x8, and 1 PCI-E 3.0 x4 (in x8 slot), 1 VGA, 1 COM, 2 GbE LAN, dedicated IPMI LAN, 2 USB 2.0 (front), 4 Fixed 3.5" drive bays + 2 External 5.25" drive bays, 300W High-efficiency Power)