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Processor & ChipsetLenovo ThinkPad T420 4236X24 
Processor ManufacturerIntel
Processor TypeCore i3
Processor Generation2nd Gen
Processor Modeli3-2310M
Processor Speed2.10 GHz
Processor CoreDual-core (2 Core)
MemoryLenovo ThinkPad T420 4236X24
Standard Memory4 GB
Memory TechnologyDDR3 SDRAM
StorageLenovo ThinkPad T420 4236X24
HDD Capacity320 GB
Optical Drive TypeDVD-Writer
Display & GraphicsLenovo ThinkPad T420 4236X24
Screen Size14"
Aspect Ratio16:9
Screen Resolution1600 x 900
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD Graphics 3000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Network & CommunicationLenovo ThinkPad T420 4236X24
Wireless LANYes
Wireless LAN StandardIEEE 802.11 a/g/n
Ethernet TechnologyGigabit Ethernet
WWAN SupportedYes
Built-in DevicesLenovo ThinkPad T420 4236X24
Front Camera/WebcamYes
Focus ModesFixed Focus
Interfaces/PortsLenovo ThinkPad T420 4236X24
Total Number of USB Ports4
Network (RJ-45)Yes
eSATA/USB ComboYes
DisplayPortYes
Headphone/Microphone Combo PortYes
SoftwareLenovo ThinkPad T420 4236X24
Operating System PlatformWindows
Operating SystemWindows 7 Professional
Operating System Architecture32-bit
Battery InformationLenovo ThinkPad T420 4236X24
Number of Cells6-cell
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time9 Hour
Physical CharacteristicsLenovo ThinkPad T420 4236X24
ColorBlack
Height1.2"
Width13.4"
Depth9.2"
Weight (Approximate)4.79 lb