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Product comparison · 2 laptops

Lenovo T420 + Mini Dock vs Lenovo T520 + ThinkPad Mini Dock Series 3

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  • 123specifications compared
  • 19differ
  • 104identical
  • 33known for one product only

Key differences

  • Display diagonal
    • 35.6 cm (14")
    • 39.6 cm (15.6")
  • Total storage capacity
    • 500 GB
    • 320 GB
  • Discrete graphics card model
    • Intel® HD Graphics
    • Intel® HD Graphics 3000
  • Audio system
    • HDA
    • High Definition Audio
  • Bluetooth
    • No
    • Yes
  • USB 2.0 ports quantity
    • 3
    • 4
  • VGA (D-Sub) ports quantity
    • 0
    • 1
  • Firewire (IEEE 1394) ports
    • 0
    • 1

Side by side

Differences highlightedShow differences only
156 specifications
A

Lenovo

T420 + Mini DockView product
B

Lenovo

T520 + ThinkPad Mini Dock Series 3View product
Designidentical
Product colourKnown for oneBlack
Display1 differ
Display diagonalDiffers35.6 cm (14")39.6 cm (15.6")
LED backlightKnown for oneYes
Display brightnessKnown for one220 cd/m²
Contrast ratio (typical)Known for one500:1
Memoryidentical
Memory layout (slots x size)Known for one2 x 2 GB
Storage2 differ
Total storage capacityDiffers500 GB320 GB
Compatible memory cardsDiffersMemory Stick (MS), MMC, MS PRO, SDMMC, SD, SDHC, SDXC
Number of HDDs installedKnown for one1
Graphics1 differ
Discrete graphics card modelDiffersIntel® HD GraphicsIntel® HD Graphics 3000
Audio1 differ
Audio systemDiffersHDAHigh Definition Audio
Speaker powerKnown for one1 W
Network1 differ
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one4G
4G standardKnown for oneWiMAX
BluetoothDiffersNoYes
WWANKnown for oneInstalled
Cabling technologyKnown for one10/100/1000Base-T(X)
4G WiMAXKnown for oneYes
Networking featuresKnown for oneGigabit Ethernet
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers34
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
eSATA/USB 2.0 ports quantityKnown for one1
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one0
eSATA ports quantityKnown for one0
HDMI ports quantityKnown for one0
Mini DisplayPorts quantityKnown for one0
VGA (D-Sub) ports quantityDiffers01
Firewire (IEEE 1394) portsDiffers01
Thunderbolt ports quantityKnown for one0
Docking connectorDiffersNoYes
SmartCard slotDiffersNoYes
Modem (RJ-11) portsDiffers01
PS/2 ports quantityKnown for one0
Parallel ports quantityKnown for one0
Serial ports quantityKnown for one0
USB 1.1 ports quantityKnown for one0
Keyboard1 differ
Pointing deviceDiffersTouchpadThinkPad UltraNav
Full-size keyboardKnown for oneNo
Security1 differ
Cable lock slot typeDiffersKensingtonIBM
Fingerprint readerKnown for oneYes
Weight & dimensions5 differ
WeightDiffers2.24 kg2.51 kg
WidthDiffers340 mm372.8 mm
DepthDiffers229.9 mm245.1 mm
Height (front)Differs2.99 cm3.18 cm
Height (rear)Differs3.04 cm3.56 cm
Packaging contentidentical
AC adapter includedKnown for oneYes
Other featuresidentical
Video inKnown for one0
Internal modemKnown for oneYes
Modem speedKnown for one56 Kbit/s
Batteryidentical
Number of battery cellsKnown for one6
Battery life (max)Known for one7.7 h

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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