Processor & Cache Memory Intel Core i7 Processor 740QM : 1.73 GHz with Turbo Boost up to 2.93 GHz; Intel Core i5 Processor 540M/520M/460M/450M/430M : 2.4 GHz - 2.26 GHz, with Turbo Boost up to 3.06/2.93/2.8/2.66/2.53 GHz Intel Pentium Dual Core Processor P6200/P6100/P6000 : 2.13 GHz - 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 14" 16:9 HD (1366x768) LED backlit Video Graphics & Memory ATI Mobility Radeon HD 5730, 2G VRAM Hard Drive 2.5" 9.5mm SATA 640GB,5400rpm 500GB,5400rpm;7200rpm 320GB,5400rpm Optical Drive DVD Super Multi Blu-Ray DVD Combo Card Reader Support SD,MMC card reader 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 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 Audio Built-in speaker and microphone Altec Lansing speakers SRS Premium Sound 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 34.9 x 23.8 x 3.65 cm (W x D x H) 2.20 kg (with 6 cell battery)