OptiPlex 9020 23" LED Intel Core i5 i5-4570S 2.90GHz 4GB RAM 500 GB HDD Win7 Pro 64-bit Desktop All-in-One Computer Intel Core 4th Generation I5-4570S Processor (2.90GHz Turbo, 6MB, w/ HD Graphics 4600) 4GB DDR3L at 1600MHz; 500 GB SATA Hard Drive (7200 RPM); Reads and writes to DVD Windows 7 Professional 64-Bit Operating System; Keyboard & Mouse; 23 Inch WLED Full-HD Non Touch with Camera All-in-One Display Intel Wireless 6235 half mini-PCI3 WLAN (802.11a/g/n 2x2; Bluetooth 4.0) 3 Years parts and labor from Dell