Dell PowerEdge R520 Server. Intel Xeon E5-2403 1.8Ghz CPU. Total 96GB RAM (upgraded since the pictures were taken). 2x 500GB 7,200rpm SATA Drives. 4x 600GB 15,000rpm SAS Drives. Dual hot-swap 495w Power Supplies. 2U Rackmount, rack rails included. Service Tag is 6NF7J02 and you can use the Dell website to get additional information. Does not includes OS. Was pulled from a working installation when they upgraded to a new server. If you have any questions, just send me a message, and we will be happy to help.