Dell OptiPlex 3020 Desktop Computer - Intel Core i5 i5-4590 3.30 GHz - Small Form Factor 3.30GHz (3.7 GHz Turbo) Intel Core i5-4590 Quad Core Processor (6MB Cache) provides ample power to handle all your computing tasks Windows 7 Professional 64 comes installed offering a user-friendly environment to work on with the option of installing Windows 8.1 Professional later (license included). Optical drive: DVD+/-RW SuperMulti Drive (reads and burns CDs and DVDS) | 4GB DDR3 memory (expandable to 16GB, 1 unoccupied slot) Speedy 7200 rpm 500GB Hard Drive: Dont settle for the slower 5400 rpm on many competing models | Monitor Not Included 6 - USB 2.0, 2 - USB 3.0, Intel HD Graphics 4600, LAN Port, 2 audio out and 2 mic jacks, VGA Port, Display Port, Space Saving Dimensions: 12.3" x 11.4" x 3.7"