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DisplayLenovo ThinkPad T420s 4173LBU 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeWSXGA
Screen Resolution1600 x 900
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelGMA HD 3000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Hard DriveLenovo ThinkPad T420s 4173LBU
Storage SizeNo
Solid State Drive Capacity128 GB
Solid State Drive InterfaceSerial ATA/300
Optical Drive TypeDVD-Writer
MemoryLenovo ThinkPad T420s 4173LBU
Memory Card SupportedSecure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC), MultiMediaCard (MMC)
Standard Memory4 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1333/PC3-10600
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkLenovo ThinkPad T420s 4173LBU
Wireless LANYes
Wireless LAN ManufacturerIntel
Wireless LAN ModelCentrino Advanced-N 6205
Wireless LAN StandardIEEE 802.11a/b/g/n
Cellular Network SupportedCDMA2000 (1xEV-DO), WCDMA
Cellular Data Connectivity TechnologyGPRS, HSPA, EVDO
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 3.0
DimensionsLenovo ThinkPad T420s 4173LBU
Height1.0"
Width13.5"
Depth9.1"
Weight (Approximate)59.2 oz
ColorBlack
Detailed SpecsLenovo ThinkPad T420s 4173LBU
WebcamYes
MicrophoneYes
Finger Print ReaderYes
SpeakersYes
ProcessorLenovo ThinkPad T420s 4173LBU
Processor ManufacturerIntel
Processor TypeCore i5
Processor Modeli5-2520M
Processor Speed2.50 GHz
Processor CoreDual-core (2 Core)
Cache3 MB
vPro TechnologyYes
Chipset ManufacturerIntel
Chipset ModelQM67 Express
SoftwareLenovo ThinkPad T420s 4173LBU
Operating SystemWindows 7 Professional
Operating System Architecture64-bit
Input DevicesLenovo ThinkPad T420s 4173LBU
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
I/O ExpansionsLenovo ThinkPad T420s 4173LBU
Expansion Slot TypeExpressCard/34
BatteryLenovo ThinkPad T420s 4173LBU
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time5.50 Hour
InterfacesLenovo ThinkPad T420s 4173LBU
VGAYes
Audio Line InYes
Audio Line OutYes
DisplayPortYes