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DisplayLenovo ThinkPad T420 4236WX2 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeHD
Screen Resolution1366 x 768
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD 3000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Hard DriveLenovo ThinkPad T420 4236WX2
Storage Size320 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM7200
Optical Drive TypeDVD-Writer
MemoryLenovo ThinkPad T420 4236WX2
Memory Card SupportedMultiMediaCard (MMC), Secure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC)
Standard Memory2 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1333/PC3-10600
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkLenovo ThinkPad T420 4236WX2
Wireless LANYes
Wireless LAN ManufacturerIntel
Wireless LAN ModelCentrino Advanced-N 6205
Wireless LAN StandardIEEE 802.11a/b/g/n
Ethernet TechnologyGigabit Ethernet
DimensionsLenovo ThinkPad T420 4236WX2
Height1.2"
Width13.4"
Depth9.1"
Weight (Approximate)76.64 oz
ColorBlack
Detailed SpecsLenovo ThinkPad T420 4236WX2
MicrophoneYes
SpeakersYes
ProcessorLenovo ThinkPad T420 4236WX2
Processor ManufacturerIntel
Processor TypeCore i5
Processor Modeli5-2520M
Processor Speed2.50 GHz
Processor CoreDual-core (2 Core)
Cache3 MB
Chipset ManufacturerIntel
Chipset ModelQM67 Express
SoftwareLenovo ThinkPad T420 4236WX2
Operating SystemWindows 7 Professional
Operating System Architecture32-bit
Input DevicesLenovo ThinkPad T420 4236WX2
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
I/O ExpansionsLenovo ThinkPad T420 4236WX2
Expansion Slot TypeExpressCard/34
BatteryLenovo ThinkPad T420 4236WX2
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time9 Hour
InterfacesLenovo ThinkPad T420 4236WX2
Total Number of USB Ports4
Number of USB 2.0 Ports4
VGAYes
eSATA/USB ComboYes
DisplayPortYes