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DisplayLenovo ThinkPad T420 4236IT7 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD 3000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
MemoryLenovo ThinkPad T420 4236IT7
Memory Card SupportedSecure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC), MultiMediaCard (MMC)
Standard Memory8 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1333/PC3-10600
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkLenovo ThinkPad T420 4236IT7
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 4236IT7
Height1.2"
Width13.4"
Depth9.2"
Weight (Approximate)76.64 oz
ColorBlack
Detailed SpecsLenovo ThinkPad T420 4236IT7
MicrophoneYes
SpeakersYes
ProcessorLenovo ThinkPad T420 4236IT7
Processor ManufacturerIntel
Processor TypeCore i5
Processor Modeli5-2540M
Processor Speed2.60 GHz
Processor CoreDual-core (2 Core)
Cache3 MB
Chipset ManufacturerIntel
Chipset ModelQM67 Express
Input DevicesLenovo ThinkPad T420 4236IT7
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
I/O ExpansionsLenovo ThinkPad T420 4236IT7
Expansion Slot TypeExpressCard/34
BatteryLenovo ThinkPad T420 4236IT7
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time9 Hour
InterfacesLenovo ThinkPad T420 4236IT7
Total Number of USB Ports4
Number of USB 2.0 Ports4
VGAYes
Audio Line OutYes
eSATA/USB ComboYes
DisplayPortYes