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Black rectangular docking station with front ports and rear connectors

Lenovo

Lenovo 40A20170US ThinkPad Ultra Docking Station 170W

SKU CH-S0EW-F7XEG MPN 40A20170US

Connects a ThinkPad T440s to multiple monitors, six USB ports and Gigabit Ethernet with an included 170 W power adapter

  • Port details1 x VGA port 1 x DVI-D port, 2 x DisplayPort, 1 x HDMI port
  • Measurements13.6 in × 6.4 in × 2.2 in
  • Product colorBlack
  • Compatible withLenovo ThinkPad T440s 20AQ Notebook
  • Product weight1.92 lb (0.87 kg)
  • Key featuresTotal Number of USB Ports: 6 Host Interface: Proprietary Int
  • Connect up to three external displays using VGA, DVI-D, DisplayPort and HDMI outputs
  • Six USB ports including three USB 3.0 and three USB 2.0 with one always-on charging port
  • Gigabit Ethernet provides wired network speeds up to 1000 Mbps for enterprise manageability
  • 170 W AC adapter included powers the dock and charges compatible ThinkPad notebooks
  • Compact 13.60 x 6.40 x 2.20 inch footprint weighs only 1.92 lbs

ThinkPad Ultra Dock 170W overview

The Lenovo 40A20170US ThinkPad Ultra Docking Station is a proprietary docking solution designed for the ThinkPad T440s 20AQ notebook. It bundles a 170W AC adapter and provides a fixed desktop expansion through a single mechanical connector. The unit adds six USB ports, Gigabit Ethernet and multiple video outputs in a compact black chassis.

Suitable users and limitations

Office workers who need dual external monitors, wired networking and a mix of USB 2.0 and 3.0 peripherals will find the port selection adequate. Buyers who require more than two simultaneous active displays should look elsewhere because the dock only activates two video outputs at once. Users of any notebook other than the specified T440s 20AQ model cannot use this proprietary interface.

Proprietary host interface constraint

The dock connects exclusively through a Lenovo proprietary host interface that matches the ThinkPad T440s 20AQ. This single mechanical connector carries power, data and video signals, so compatibility is binary — the notebook either fits the connector or it does not.

How it compares

Measured against everything we stock in USB-C & Laptop Docking Stations, at today’s prices. Recalculated every night.

Price $247.99
Pricier than about 85% of the 1,971 comparable items (median $81.99).

Specifications

Product
Brand nameLenovo
Model name40A20170US
Product colorBlack
Ports & slots
Port details1 x VGA port
1 x DVI-D port, 2 x DisplayPort, 1 x HDMI port (only 2 can be active)
3 x USB 2.0 ports, one port supports always-on USB charging
3 x USB 3.0 port
10/1000 Gigabit Ethernet port
Includes a ThinkPad 170 W AC Power Adapter (Slim Tip)
Size & build
Measurements13.6 in × 6.4 in × 2.2 in
Product weight1.92 lb (0.87 kg)
Shipping weight1.95 kg
Package size378 × 218 × 89 mm
Compatibility
Compatible withLenovo ThinkPad T440s 20AQ Notebook

Questions about this item

What proprietary connector must my ThinkPad T440s 20AQ have to dock with the 40A20170US Ultra Dock?

The dock uses Lenovo's proprietary side docking interface that matches the rectangular connector on the bottom of the T440s 20AQ; no cable or adapter is required — the notebook slides directly onto the dock.

Will the 170W AC adapter included with this dock also charge a ThinkPad that normally ships with a 90W adapter?

Yes. The supplied 170W adapter is backward-compatible and will charge the T440s 20AQ, which normally uses a 90W unit, without any configuration.

How can I confirm that both external monitors connected to the DisplayPort 1.2 and HDMI 1.4 outputs are active simultaneously?

After docking, open Windows Display Settings — both monitors should appear as separate displays; if only one shows, the notebook's graphics configuration may limit simultaneous output to two video ports total.

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