Genuine Lenovo Mini Dock 4337 With AC for T420 T430 T510 T520 X220 X230 W520

Genuine IBM/Lenovo ThinkPad T420 T430 T520 X220 Mini Dock Series 3 4337 75Y5735

Features and benefits:

Left corner alignment for easy system attachment

Convenient eject button for one-step system removal

Six USB 2.0 ports

Three video ports:

Any two, of the three, video ports can be used simultaneously:

ThinkPad systems with NVIDIA Optimus technology: ThinkPad display is enabled. For more information: NVIDIA Optimus - ThinkPad Multiple Monitor Configurations

ThinkPad systems with integrated graphics, or other discrete graphics: Disables the ThinkPad display. The ThinkPad display is blank.

VGA analog monitor supporting 1920 x 1200 resolution

One Single-Link DVI-D digital monitor supporting 1920 x 1200 resolution

Single-Link DVI-D port does not support attachment of a DVI-to-VGA monitor adapter.

One DisplayPort monitor supporting 2560 x 1600 resoltion

Supports attachment (compatibility varies by ThinkPad system) of DisplayPort monitor cables; Using DisplayPort monitor cables reduces resolution to 1920 x 1200

Audio ports: Analog microphone in, headphone out

RJ-45 Ethernet port