Dell Latitude E6400 14" Laptop Core 2 Duo 2.8GHz 4GB 250GB DVD+/-RW WINDOWS 7 PRO 64-Bit Processor: Intel Core 2 Duo T9600 2.80GHz; 2 Cores, 2 Threads; 6MB L2 Cache; Memory: 4GB DDR2 SODIMM Installed; Hard Drive: 250GB SATA Audio: Integrated HD Audio Controller; Communication: Integrated Gigabit Ethernet 10/100/1000; Wireless: Dell Wireless 1397 (802.11g) Operating System: Genuine Dell Windows 7 Professional 64-Bit Installed with Recovery Partition and Certificate Of Authenticity; Optical Storage: CD/DVD+/-RW DL Slim Line Super Combo; Display: 14.1 Premium, UltraSharp WXGA+ (1440x900) LED Display I/O Ports: 3 USB 2.0 (1 is a charging port), 1 eSATA/USB Combo, 1 IEEE 1394 Firewire, 1 DisplayPort, 1 VGA, 1 Headphone / Audio Out, 1 Microphone / Audio In, 5-in-1 Media Card Reader, Smart Card Reader and Contactless, Smart Card Reader ExpressCard 54mm, 1 Ethernet (RJ-45) Graphics: Integrated High Definition Video Controller; Audio: Integrated HD Audio Controller; Battery: 9-Cell 90Wh Extended Runtime