This Microsoft Authorized Refurbished product comes preloaded with Windows XP and includes a restore CD.
Dell OptiPlex GX520 provides quick and convenient status of your hard drive activity and network connectivity. Two USB 2.0 ports are conveniently located on the front of the system. Dell's innovative BTX chassis, power supply and motherboards are designed for thermal efficiency providing improved reliability and quieter operation. HyperCool thermal management technology provides cooling that uses less power and enables quieter operation, while innovative chassis design provides tool-less access to the system and components for quick, easy upgrades and service.