Product comparison · 2 laptops

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

123specifications compared
16differ
107identical
32known for one product only

Key differences

Total storage capacity
- T420 + Mini Dock:500 GB
- T420 + ThinkPad Mini Dock Series 3:320 GB
Discrete graphics card model
- T420 + Mini Dock:Intel® HD Graphics
- T420 + ThinkPad Mini Dock Series 3:Intel® HD Graphics 3000
Audio system
- T420 + Mini Dock:HDA
- T420 + ThinkPad Mini Dock Series 3:High Definition Audio
Bluetooth
- T420 + Mini Dock:No
- T420 + ThinkPad Mini Dock Series 3:Yes
VGA (D-Sub) ports quantity
- T420 + Mini Dock:0
- T420 + ThinkPad Mini Dock Series 3:1
Docking connector
- T420 + Mini Dock:No
- T420 + ThinkPad Mini Dock Series 3:Yes
SmartCard slot
- T420 + Mini Dock:No
- T420 + ThinkPad Mini Dock Series 3:Yes
Modem (RJ-11) ports
- T420 + Mini Dock:0
- T420 + ThinkPad Mini Dock Series 3:1

Side by side

Differences highlightedShow differences only

Comparison of T420 + Mini Dock, T420 + ThinkPad Mini Dock Series 3
155 specifications	A Lenovo T420 + Mini Dock View product	B Lenovo T420 + ThinkPad Mini Dock Series 3 View product
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Displayidentical
LED backlightKnown for one	Unknown — not stated by the source	Yes
Display brightnessKnown for one	Unknown — not stated by the source	200 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	300:1
Memoryidentical
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 2 GB
Storage2 differ
Total storage capacityDiffers	500 GB	320 GB
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD	MMC, SD, SDHC, SDXC
Graphics1 differ
Discrete graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 3000
Audio1 differ
Audio systemDiffers	HDA	High Definition Audio
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Network1 differ
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	4G	Unknown — not stated by the source
4G standardKnown for one	WiMAX	Unknown — not stated by the source
BluetoothDiffers	No	Yes
WWANKnown for one	Installed	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
4G WiMAXKnown for one	Yes	Unknown — not stated by the source
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ports & interfaces4 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	0	Unknown — not stated by the source
eSATA ports quantityKnown for one	0	Unknown — not stated by the source
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
Mini DisplayPorts quantityKnown for one	0	Unknown — not stated by the source
VGA (D-Sub) ports quantityDiffers	0	1
Firewire (IEEE 1394) portsKnown for one	0	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Docking connectorDiffers	No	Yes
SmartCard slotDiffers	No	Yes
Modem (RJ-11) portsDiffers	0	1
PS/2 ports quantityKnown for one	0	Unknown — not stated by the source
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Serial ports quantityKnown for one	0	Unknown — not stated by the source
USB 1.1 ports quantityKnown for one	0	Unknown — not stated by the source
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Full-size keyboardKnown for one	No	Unknown — not stated by the source
Security1 differ
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.24 kg	2.17 kg
WidthDiffers	340 mm	340.5 mm
DepthDiffers	229.9 mm	233 mm
Height (front)Differs	2.99 cm	3.01 cm
Height (rear)Differs	3.04 cm	3.05 cm
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
Video inKnown for one	0	Unknown — not stated by the source
Internal modemKnown for one	Unknown — not stated by the source	Yes
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Batteryidentical
Number of battery cellsKnown for one	Unknown — not stated by the source	6
Battery life (max)Known for one	Unknown — not stated by the source	9 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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