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Display Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26 
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 Drive Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Storage Size320 GB
Hard Drive InterfaceSerial ATA/300
Optical Drive TypeDVD-Writer
Memory Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
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
Network Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Wireless LANYes
Wireless LAN ManufacturerIntel
Wireless LAN ModelCentrino Advanced-N 6205
Wireless LAN StandardIEEE 802.11a/b/g/n
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 3.0
Dimensions Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Height1.2"
Width13.4"
Depth9.2"
Weight (Approximate)76.64 oz
ColorBlack
Detailed Specs Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
WebcamYes
MicrophoneYes
SpeakersYes
Processor Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
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
Software Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Operating SystemWindows 7 Professional
Operating System Architecture64-bit
Input Devices Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
I/O ExpansionsLenovo ThinkPad T420 4177A26
Expansion Slot TypeExpressCard/34
Battery Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time9 Hour
Interfaces Lenovo Thinkpad T420 4177A26Lenovo ThinkPad T420 4177A26
FireWire/i.LINKYes
Total Number of USB Ports4
Number of USB 2.0 Ports4
VGAYes
Audio Line OutYes
eSATA/USB ComboYes
DisplayPortYes