Lenovo ThinkPad T510 Intel Core i5-540M X2 2.66GHz 4GB 160GB DVD-RW 15.6'' Win7 (Black) Intel Core i5-540M 2.66GHz; 160GB SATA; 4GB DDR3 15.6" LCD display; 1366 x 768; Intel Integrated Graphics 802.11N; No Bluetooth; Microsoft Windows 7 Non-Backlit Keyboard; SuperMulti-DVD Burner; 6 Hours Battery Life 4 USB 2.0 Ports