Lenovo ThinkPad SL510 28479XU 15.6-Inch Laptop (Black) 2.1GHz Intel T6570 Core 2 Duo Processor; 800MHz Bus Speed; 2M L2 Cache 3GB Memory; Intel Wifi Link 1000 WLAN 320GB Hard Drive; includes DVD writer 15.6" Display Windows 7 Professional 32; 6 Cell Battery