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Your cart is empty.[1] Surface USB4® Dock is compatible with USB-C® devices. However, when connected, it operates at the speeds and capabilities of the USB-C port. USB-C/USB 3.2 connection supports one external display up to 4K at 60Hz (when supported by device and display). Or you can daisy chain more monitors, as described in the section on this page: https://learn.microsoft.com/surface/surface-dock-whats-new#connect-multiple-monitors-to-devices-without-usb4thunderbolt-4. [2] Requires device with USB4®/Thunderbolt 4 port and a supported device and display. [3] USB-C® is a registered trademark of USB implementers Forum. [4] Additional compatibility details can be found at https://aka.ms/SurfaceDockCompatibility. [5] For details on USB-C charging compatibility visit: https://support.microsoft.com/en-us/surface/usb-c-and-fast-charging-for-surface-d320ab19-e4ed-c36d-7458-7d7aec69d34a
DockGuy
Reviewed in the United States on April 20, 2025
Like the MS Thunderbolt 4 dock before it, the build quality of the MS USB4 Dock for Business is excellent inside and out. So is the packaging which is 100% recyclable. But you really don't get a lot of ports for ~$200 USD, and the 65W power delivery just isn't enough for a Surface Laptop Studio. Its really only suitable for the Surface Pro 8/9/10/11 or regular Surface Laptop 5/6/7 without an Nvidia GPU.On the plus side, its a real USB4 device based on the RealTek RTS5490 chip where the downstream USB-C ports can run 40Gb/s SSDs and external GPUs. Sadly, my external ASM2464-based NVMe SSD was limited to ~2200MB/s when connected through the Dock whereas plugging it direct to the laptop yielded ~3750MB/s. I saw the same throughput issue with an external GPU. So there may be a firmware issue with the initial shipping units limiting downstream USB4 performance.Compared to the older MS Thunderbolt 4 dock, there are a several disadvantages:- no audio- 1Gb/s Ethernet instead of 2.5Gb/s- 3 fewer data ports- less available power on the USB-C ports (7.5W vs 15W)- less power to charge your laptop (65W vs 100W)You would think that a key advantage of the USB4 dock would be that its size and weight is 1/2 of the older dock, but it cannot be used as a bus-powered device - you must use it with a USB-C power supply so its not really that portable. The fact that it uses a standard 100W USB-C PD power supply is a huge advantage over older MS Docks that uses proprietary power supplies though.Given that the MS Thunderbolt 4 dock is frequently discounted to ~$209.99 (only $10 more than the USB4 Dock) most folks are probably better off with the older Thunderbolt 4 dock given its added versatility.Well, that is a summary of my more in depth "Surface USB4 Dock for Business Teardown and Review"- thanks for reading.
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