Processor & Cache Memory Intel Core i5 Processor 540M/520M/460M/450M/430M : 2.53 GHz - 2.26 GHz, with Turbo Boost up to 3.06/2.93/2.8/2.66/2.53 GHz; Intel Core i3 Processor 370M/350M/330M : 2.4 GHz - 2.13 GHz, Intel Pentium Dual-Core Processor P6000 : 1.86 GHz Chipset Mobile Intel HM55 Express Chipset Main Memory DDR3 1066 MHz SDRAM, 2 x SODIMM socket for expansion up to 8GB SDRAM Display 15.6" 16:9 HD (1366x768) Video Graphics & Memory ATI Mobility Radeon HD 5470 , 512MB VRAM Hard Drive 640GB,5400rpm 500GB,5400rpm;7200rpm 320GB,5400rpm;7200rpm Optical Drive DVD Super Multi Card Reader 4 in 1 card reader SD,MMC,MS,MS-Pro Video Camera 0.3 Mega Pixel web camera Fax/Modem/LAN/WLAN Integrated 802.11 b/g/n or 802.11b/g Built-in Bluetooth V2.1+EDR (optional) 10/100/1000 Base T Interface 1 x Microphone-in jack 1 x Headphone-out jack 1 x VGA port/Mini D-sub 15-pin for external monitor 3 x USB 2.0 ports 1 x RJ45 LAN Jack for LAN insert 1 x HDMI 1 x Headphone-out & Audio-in Combo Jack Audio Built-in speaker and microphone Altec Lansing speakers SRS Premium Sound Keyboard ASUS 348mm keyboard integrated Numeric keypad 19mm full size key pitch Battery Pack & Life 6 cells: 4400 mAh 47 Whrs AC Adapter Output: 19 V DC, 4.74 A, 90W Input: 100-240 V AC, 50/60 Hz universal Dimension & Weight 38.0 x 25.5 x 3.40~3.56 cm (W x D x H) 2.62 kg (with 6 cell battery) Security BIOS Booting / HDD User Password Protection Please do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.