Optiplex GX620 MiniTower, i945G, Pentium D 945 (3.40GHz, 800MHzFSB, 2x2MB Cache), 512MB 533MHz DDRII SDRAM Memory (1 x 512MB), video Intel GMA950, 160GB SATA II, 16x DVD-RW Drive + Roxio + SW Decode , LAN 10/100/1000, Front USB/Audio, USB Dell Quietkey Black Keyboard, Dell 2 Button Wheel USB Scroll Optical Mouse Black, Optiplex Resource CD, Microsoft® Windows® XP Professional SP2