Lenovo ThinkStation P310 Tower 30AT000FUS - Intel Xeon E3-1245 v5 Processor, 8GB RAM, 1TB 7.2K HDD, Windows 7 Professional Intel Xeon E3-1245 v5 Quad-Core 3.50GHz Processor (Up to 3.90GHz) 1x 8GB UDIMM DDR4-2133 Non-ECC, 1x 1TB HDD 7.2K 3.5" Intel HD P530 Graphics, Windows 7 Professional (Preinstalled through downgrade rights in Windows 10 Pro) DVDRW Optical Drive, 9-in-1 Media Reader, 250W Bronze Power Supply, Chassis Intrusion Switch Front Ports: 2x USB 3.0, mic, headphone; Rear Ports: 2x USB 2.0, 4x USB 3.0, VGA, 2x DisplayPort, 1x serial (9-pin), 1x Ethernet (RJ-45)