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Black rectangular AC adapter with detachable power cord

CELUX

CELUX 90W 20V 4.5A AC Adapter for Lenovo ThinkPad Ultra Dock Gen 2 Pro

SKU CH-KDR8-16N3M

90 W, 20 V, 4.5 A AC adapter powers Lenovo ThinkPad Ultra Dock Gen 2 Pro and ThinkVision P27, P28, X24 monitors

  • Powers Lenovo ThinkPad Ultra Dock Gen 2 Pro and compatible ThinkVision monitors
  • Delivers 90 W at 20 V 4.5 A for stable docking performance
  • Accepts 100-240 V input for worldwide use
  • Meets nationally recognised electronic safety standards
  • Includes power adapter and power cord in the box

90W AC Adapter for ThinkPad Ultra Dock Gen 2 Pro

This 90-watt power adapter delivers 20 volts at 4.5 amps for the Lenovo ThinkPad Ultra Dock Gen 2 Pro and compatible ThinkVision monitors. It replaces part numbers 40AS0090US, 40A90090US, 40A20090US and 40A10090US. The unit ships with a detachable AC power cord.

Safety-rated design with wide input range

The adapter meets nationally recognised electronic safety standards and accepts 100 to 240 volt AC input for worldwide use. In normal operation it runs at its rated 90-watt output without exceeding thermal limits. No active cooling is fitted, so silent running is inherent.

Direct replacement for dock and monitor power

It plugs straight into the Ultra Dock Gen 2 Pro barrel connector and powers attached ThinkVision P27, P28 or X24 displays through the dock. Do not use it if the connected laptop demands more than 4.5 amps. The package includes the adapter and mains cord only.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 62% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 20V 4.5A adapter to the ThinkPad Ultra Dock Gen 2 Pro, and what mistake should I avoid?

Plug the adapter barrel into the dock power port and the IEC C7 cord into the wall; the mistake is using it on any laptop that draws more than 4.5A at 20V.

What part will need replacement first during the adapter's life?

The detachable IEC C7 power cord typically fails before the sealed 90W brick, so keep a spare cord handy.

What limit appears first when the adapter runs continuously at full load?

The 90W output ceiling is reached at 20V 4.5A; sustained operation at that level will hit thermal protection before any other limit.

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