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Black rectangular docking station with multiple ports visible on front and back faces

Kensington

Kensington SD4781P USB-C & USB-A Docking Station, Dual 4K, 100W PD

SKU CH-2G72-14WGX

A USB-C and USB-A docking station that drives two 4K displays and supplies up to 100W of power delivery to the host laptop

  • Port details1 x USB 2.0
  • Measurements14.33 in W × 12.83 in H × 9.06 in D
  • Product colorBlack
  • Compatible withMacBook Pro/Microsoft
  • Key featuresUsb3.2_gen_2, usb3.2_gen_1, hdmi, displayport, 14, 6, 2, Mac
  • Dual 4K external monitors supported via DisplayLink
  • Up to 100W Power Delivery charges compatible laptops
  • Works with USB-C and legacy USB-A laptops
  • Contains up to 50% post-consumer recycled plastic
  • Compatible with Windows 7+, macOS 10.14+, Chrome OS 44+

Kensington SD4781P Docking Station

The Kensington SD4781P is a USB-C and USB-A docking station that drives up to two external displays at 4K resolution. It supplies up to 100W of Power Delivery to compatible laptops while providing a single USB 2.0 port alongside the video outputs. The unit is built with up to 50% post-consumer recycled plastic and includes a three-year limited warranty.

Suits Windows 7+, macOS 10.14+

This dock works with laptops running Windows 7 or above, macOS 10.14 or above, and Chrome OS 44 or above, including Mac models with M1, M2 and M3 chips that normally restrict external display count. USB-A laptops need the optional K38310NA power splitter to receive Power Delivery. Buyers who need more than one USB 2.0 port or additional USB-A connectors should look elsewhere.

100W Power Delivery over USB-C

The single specification that decides fit is the 100W Power Delivery rating delivered through the USB-C upstream port. If the host laptop accepts 100W charging over USB-C, the dock powers it while driving two 4K monitors. If the laptop requires more power or does not support USB-C Power Delivery, the dock cannot charge it.

How it compares

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

Price $185.99
Pricier than about 76% of the 1,971 comparable items (median $81.99).

Specifications

Product
Brand nameKensington
Product lineK33603AP
Model nameK33603AP
Part numberK33603AP
Product colorBlack
Ports & slots
Port details1 x USB 2.0
Size & build
Measurements14.33 in W × 12.83 in H × 9.06 in D
Shipping weight1.45 kg
Package size234 × 150 × 91 mm
Compatibility
Compatible withMacBook Pro/Microsoft

Questions about this item

How do I install the SD4781P dock and what step is commonly missed?

Connect the dock to your laptop using the included USB-C or USB-A cable, install the DisplayLink driver from the Kensington website, then connect monitors to the two HDMI or two DisplayPort outputs; the step often missed is installing the driver before plugging in displays.

What maintenance or replacement will the SD4781P need over time?

The dock has no user-serviceable parts; keep its vents clear of dust and check cable connections periodically, while the 3-year limited warranty covers defects — no routine component replacement is required.

What limit appears first when driving dual 4K displays continuously?

The dock delivers up to 100 W of Power Delivery; sustained dual 4K output combined with high laptop charging demand can reach that power ceiling before thermal limits become an issue.

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