Sony VAIO VPCEE34FX/BJ 15.5-Inch Widescreen Laptop (Black) Processor: Type: AMD Athlon II Dual Core P340, 2.20GHz, 1MB L2 Cache; Operating system: Genuine Microsoft Windows 7 Home Premium 64-bit; Display: 15.5", 1366 x 768 resolution, LED Back Light Technology; Graphics: ATI Mobility Radeon HD 4250 Graphics Memory: 4GB DDR3, 8GB maximum; Hard drive: 320GB (5400 RPM); Serial ATA hard disk drive; Optical Drive: Blu-ray Disc ROM and DVD SuperMulti drive Audio: Stereo speakers; Webcam: Built-in MOTION EYE camera and microphone with face-tracking technology Communications: 10Base-T/100Base-TX/1000Base-T Fast Ethernet (RJ-45), Wi-Fi: 802.11 b/g/n; Card reader: Multimedia Card Reader (One Memory Stick PRO (STD / Duo) media slot with MagicGate functionality, One Secure Digital (SD memory card) media slot; Ports: VGA, HDMI, Microphone input port, Headphone output port, 4 USB 2.0 ports, RJ-45 LAN port; Battery: Standard 3500mAh Lithium-ion Battery