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Black rectangular docking station with side connector and 135W power adapter

Lenovo

Lenovo ThinkPad Ultra Docking Station 135W 40AJ0135US

SKU CH-EPAX-X55CZ

A 135W docking station with a proprietary side connector for ThinkPad notebooks, supporting 40 external devices and enterprise features like PXE boot and MAC address pass-through

  • Proprietary side connector enables driver-free docking
  • 135W power delivery supports rapid notebook charging
  • PXE boot and wake-on-LAN simplify IT asset management
  • MAC address pass-through streamlines network deployment
  • Designed and tested for ThinkPad notebook compatibility

ThinkPad 135W Ultra Docking Station

This Lenovo docking station connects compatible ThinkPad notebooks through a proprietary side connector. It delivers up to 135W of power for rapid charging while the system is docked. A mirrored power button lets users start the laptop without opening the lid. The unit is designed for large enterprise deployments.

Suited for enterprise ThinkPad fleets.

IT teams managing Lenovo ThinkPad notebooks gain driver-free connectivity to USB peripherals and external displays. PXE boot, wake on LAN, and MAC address pass-through simplify asset management. Buyers using non-ThinkPad laptops or devices without the matching side connector cannot use this dock.

135W power delivery via proprietary connector

The dock supplies up to 135W through its dedicated ThinkPad interface, enabling rapid charging while driving attached accessories. This single power figure determines whether the unit can support a specific notebook's charging requirements. Systems needing a different connector or higher wattage will not be compatible.

How it compares

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

Price $47.99
Cheaper than about 71% of the 1,971 comparable items (median $81.99).

Specifications

Product
Brand namePC WHOLESALE EXCLUSIVE

Questions about this item

How do I connect the dock using the proprietary side connector and what step is often missed?

Align the notebook with the proprietary side connector and press firmly until it clicks; the step often missed is ensuring the connector seats fully before powering on the dock.

What maintenance will the 135W power supply need over time?

Keep the 135W power supply vents clear of dust and replace the unit if the output voltage drifts or the fan becomes noisy.

What limit appears first when driving multiple external displays under sustained load?

The 135W power budget is the first limit reached when driving multiple displays and charging the notebook simultaneously.

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