ThinkPad Series 3 Dock Comparison

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Supported Systems

The only difference between the 90W and the 170W versions of the Mini Dock Plus Series 3 is the amount of power supplied to the laptop. The W510 and W520 have higher power requirements and must use the 170 watt dock.

Port Replicator

Mini Dock

Mini Dock Plus 90W

Mini Dock Plus 135W
(Discontinued)
Mini Dock Plus 170W

Part Number 433610W 433710U 433810U 433820U 433830U
L412 × × × × ×
L420 × × × × ×
L512 × × × × ×
L520 × × × × ×
T400s × × × × ×
T410 × × × × ×
T410i × × × × ×
T410s × × × × ×
T410si × × × × ×
T420 × × × × ×
T420s × × × ? ×
T510 × × × × ×
T510i × × × × ×
T520
Dual-Core
× × × × ?
T520
Quad-Core
×
W510 × ×
W520 ? ×
X220 × × × × ×

The Mini Dock Plus 170W is required for systems with Quad-Core discrete graphics

Feature and Port Comparison

Port Replicator Mini Dock Mini Dock Plus
Ports
USB 2.0 4 6 6
e-SATA 0 0 1
VGA 1 1 1
DVI-D 0 1 2
DisplayPort 0 1 2
Microphone in 0 1* 1
Headphone out 0 1* 1
Gigabit Ethernet 1 1 1
Features
Power supply included None 90W Depends
Power supply
wattage required
Same as
your sys
90W Depends
Cable lock Yes Yes Yes
Key lock No Yes Yes

*Inactive when when a L412 or L512 is docked

For Mini Dock and Mini Dock Plus: the video controller only allows for two video ports to be used simultaneously (excluding devices with NVIDIA Optimus technology)

Monitor Configurations With NVIDIA Optimus

Hint:
Of the four total possible active monitors, up to three can be external and only two of the externals can be digital (DVI/DisplayPort)

See Technical Brief ThinkPad Multiple Monitor Configurations Using NVIDIA Optimus Technology for complete details. Prior to December 2011 the documentation was wrong; see this thread for details.

Monitor Configurations Without NVIDIA Optimus

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