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DisplayLenovo ThinkPad T420 41786VU 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeWSXGA
Screen Resolution1600 x 900
Backlight TechnologyLED
Graphics Controller ManufacturerIntel, NVIDIA
Graphics Controller ModelGMA HD 3000, Quadro NVS 4200M
Graphics Memory CapacityUp to 1 GB
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared, Dedicated
Hard DriveLenovo ThinkPad T420 41786VU
Storage Size500 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM7200
Optical Drive TypeDVD-Writer
MemoryLenovo ThinkPad T420 41786VU
Memory Card SupportedMultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC)
Standard Memory4 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1333/PC3-10600
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkLenovo ThinkPad T420 41786VU
Wireless LANYes
Wireless LAN ManufacturerIntel
Wireless LAN ModelCentrino Advanced-N 6205
Wireless LAN StandardIEEE 802.11n
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 3.0
DimensionsLenovo ThinkPad T420 41786VU
Height1.2"
Width13.4"
Depth9.1"
Weight (Approximate)75.2 oz
ColorBlack
Detailed SpecsLenovo ThinkPad T420 41786VU
WebcamYes
MicrophoneYes
Finger Print ReaderYes
ProcessorLenovo ThinkPad T420 41786VU
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 T420 41786VU
Operating SystemWindows 7 Professional
Operating System Architecture64-bit
Input DevicesLenovo ThinkPad T420 41786VU
Pointing Device TypeTouchPad, Trackpoint
I/O ExpansionsLenovo ThinkPad T420 41786VU
Expansion Slot TypeExpressCard/34
BatteryLenovo ThinkPad T420 41786VU
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time15 Hour
InterfacesLenovo ThinkPad T420 41786VU
Total Number of USB Ports4
Number of USB 2.0 Ports4
VGAYes
eSATA/USB ComboYes
DisplayPortYes