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DisplayLenovo ThinkPad T420s 4174W2F 
Screen Size14.00 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeWSXGA
Screen Resolution1600 x 900
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD 3000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Hard DriveLenovo ThinkPad T420s 4174W2F
Storage Size250 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM5400
Optical Drive TypeDVD-Writer
MemoryLenovo ThinkPad T420s 4174W2F
Memory Card SupportedSecure Digital (SD) Card, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC), MultiMediaCard (MMC)
Standard Memory2 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1333/PC3-10600
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkLenovo ThinkPad T420s 4174W2F
Wireless LANYes
Wireless LAN StandardIEEE 802.11b/g/n
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 3.0
DimensionsLenovo ThinkPad T420s 4174W2F
Height1.0"
Width13.5"
Depth9.1"
Weight (Approximate)58.88 oz
ColorBlack
Detailed SpecsLenovo ThinkPad T420s 4174W2F
MicrophoneYes
Finger Print ReaderYes
SpeakersYes
ProcessorLenovo ThinkPad T420s 4174W2F
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 T420s 4174W2F
Operating SystemWindows 7 Professional
Operating System Architecture32-bit
Input DevicesLenovo ThinkPad T420s 4174W2F
Pointing Device TypeTouchPad, Trackpoint
TouchPad FeaturesMulti-touch Gesture
I/O ExpansionsLenovo ThinkPad T420s 4174W2F
Expansion Slot TypeExpressCard/34
BatteryLenovo ThinkPad T420s 4174W2F
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time5.50 Hour
InterfacesLenovo ThinkPad T420s 4174W2F
Total Number of USB Ports3
Number of USB 2.0 Ports2
Number of USB 3.0 Ports1
VGAYes
Audio Line OutYes
DisplayPortYes