Lenovo Thinkpad E431

*Model :ThinkPad E431*Processor: Intel® Core i7-3632QM Processor (6M Cache, 2.2 GHz up to 3.20 GHz)*Operating System: Free DOS*Display :14.0" HD Antiglare Display (1366 x 768) (200 NITS)*Graphics :Intel HM77 - Intel HD 4000 Integrated Graphics*Webcam :720p HD face-tracking technology, low light sensitive*Memory :4 GB DDR3 (2 DIMM Slots)*Battery : Battery Life Up to 6 hours (with standard 6-cell removable battery)*Dimensions :(W X D X H) 13.54" x 9.40" x 0.98"*Weight :4.7 lbs*Keyboard :Windows 8 optimized Island Keyboard*Audio :"Dolby® Advanced Audio with Stereo speakersBuilt-in dual array microphone (combo jack)"*Wireless :ThinkPad bgn Wireless BT Combo (1x1 BGN & BT4.0)*Ethernet :Gigabit Ethernet*Bluetooth®: Yes*Navigation: 5-button TouchPad*Optical Drive: DVD-RW/CD-RW Rambo Drive*I/O (Input/Output) Ports: () MiniDisplayPort with audio,(1) VGA,(1) HDMI,() 3.5mm Combo Jack Headphone/MIC,(2) USB 3.0,(1) USB 2.0,(1) Always on USB 2.0,(1) 4-in-1 SD Card Reader,() Express Card 34mm,() Smart Card Reader,(1) Lenovo OneLink Technology,*Storage :HDD: 500GB*Warranty :1 Year International