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Rectangular Lenovo ThinkPad dock in multicolour finish with multiple ports visible

Lenovo

Lenovo 40AY0135US docking station 135 W 100 W charging 3 displays 4K 60 Hz 11 ports

SKU CH-39CD-21X81 MPN 40AY0135US

A USB-C dock with 11 ports, 100 W laptop charging and triple 4K 60 Hz displays

  • Main functionInternet Tablet
  • Product colorMulticolor
  • Product weight1 lb (0.45 kg)
  • Up to 100 W notebook charging from 135 W dock
  • Three 4K displays at 3840 x 2160 and 60 Hz
  • Eleven ports including HDMI, DisplayPort, RJ-45 and six USB
  • Fleet manageability with PXE boot, Wake-on-LAN and MAC passthrough
  • Silent firmware updates and remote queries for IT teams

Universal USB-C Dock for multi-display workflows

The Lenovo 40AY0135US connects through a single USB-C cable to deliver 135 W total power with up to 100 W charging for the host notebook. It targets professionals who need three external 4K displays at 60 Hz and a consolidated port layout for desk-based productivity.

Eleven ports expand connectivity without extra hubs

Two DisplayPort and one HDMI output drive the triple 4K 60 Hz setup. Six USB ports split into three USB Type-A, one additional USB Type-A, one USB Type-C and two USB 2.0 ports handle peripherals, while an RJ-45 jack adds wired networking.

USB-C Alt-Mode bandwidth caps video

The dock relies on the host's USB-C Alternate Mode implementation, so maximum display count and 4K 60 Hz refresh depend on the notebook's graphics and port capabilities. Advanced fleet features such as PXE boot, Wake-on-LAN and MAC address pass-through function only on supported ThinkPad models.

How it compares

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

Price $195.99
Pricier than about 78% of the 1,971 comparable items (median $81.99).

Specifications

Product
Brand nameLenovo
Model name40AY0135US
Part number40AY0135US
Product colorMulticolor
Size & build
Product weight1 lb (0.45 kg)
Shipping weight1.36 kg
Package size208 × 157 × 76 mm
More details
Main functionInternet Tablet

Questions about this item

Does the 135 W power adapter ever need replacing, or is the dock powered entirely by the notebook?

The dock includes a 135 W power supply that delivers up to 100 W charging to the notebook; if the adapter fails it must be replaced with an equivalent unit.

With three 4K 60 Hz displays connected, which port runs out of bandwidth first?

Two DisplayPort and one HDMI port share the USB-C Alt-Mode link, so total display bandwidth is limited by that single upstream connection.

How loud or hot does the unit get when all 11 ports and three 4K displays run continuously?

The dock has no fan and draws up to 135 W from its external adapter, so heat is dissipated passively through the chassis during all-day operation.

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