Dell Optiplex Tower, Intel Core 2 Duo 2.66Ghz CPU, New 4GB Memory, 500GB Hard Drive, NEW USB WiFi, DVD/CD-RW Optical Drive -Windows 10 (Certified Refurbished) This certified reconditioned product is tested and certified by the manufacturer or by a third-party seller to look and work like new, with some signs of wear! The reconditioning process includes functionality testing, inspection and repackaging! Windows 10- Keyboard and Mouse. New Wifi Adapter. New 4GB Memory.