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DisplayLenovo ThinkPad T431s 20AA0031LM 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeHD
Screen Resolution1600 x 900
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD 4000
Graphics Memory TechnologyDDR3L SDRAM
Graphics Memory AccessibilityShared
Hard DriveLenovo ThinkPad T431s 20AA0031LM
Solid State Drive Capacity256 GB
Solid State Drive InterfaceSerial ATA/600
Optical Drive TypeNo
MemoryLenovo ThinkPad T431s 20AA0031LM
Memory Card SupportedMultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC)
Standard Memory4 GB
Maximum Memory12 GB
Memory TechnologyDDR3L SDRAM
Memory StandardDDR3L-1600/PC3-12800
Number of Total Memory Slots1
Memory Card ReaderYes
NetworkLenovo ThinkPad T431s 20AA0031LM
Wireless LANYes
Wireless LAN ManufacturerIntel
Wireless LAN ModelCentrino Advanced-N 6235
Wireless LAN StandardIEEE 802.11a/b/g/n
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 4.0
DimensionsLenovo ThinkPad T431s 20AA0031LM
Height0.8"
Width13.0"
Depth8.9"
Weight (Approximate)57.6 oz
ColorGraphite Black
Detailed SpecsLenovo ThinkPad T431s 20AA0031LM
WebcamYes
MicrophoneYes
Finger Print ReaderNo
SpeakersYes
ProcessorLenovo ThinkPad T431s 20AA0031LM
Processor ManufacturerIntel
Processor TypeCore i5
Processor Modeli5-3437U
Processor Speed1.90 GHz
Processor CoreDual-core (2 Core)
Cache3 MB
vPro TechnologyYes
Chipset ManufacturerIntel
Chipset ModelQM77 Express
SoftwareLenovo ThinkPad T431s 20AA0031LM
Operating SystemWindows 7 Professional Upgradable to Windows 8 Pro
Operating System Architecture64-bit
Input DevicesLenovo ThinkPad T431s 20AA0031LM
Keyboard BacklightYes
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
BatteryLenovo ThinkPad T431s 20AA0031LM
Battery ChemistryLithium Polymer (Li-Polymer)
InterfacesLenovo ThinkPad T431s 20AA0031LM
Total Number of USB Ports2
Number of USB 3.0 Ports2
VGAYes
DisplayPortYes
Headphone/Microphone Combo PortYes