Hello Jeremy Hammel, welcome to Microsoft Q&A.
Unfortunately, the Surface Pro 11th Edition is limited to two external displays when the built-in screen is active. This is a hardware/firmware limitation of the Snapdragon X platform and cannot be overcome by any dock.
Surface Pro 11 has two USB4 ports with DisplayPort 1.4a, and the Qualcomm Adreno GPU supports two external display pipelines maximum. A dock does not add display pipelines — it only routes the existing video outputs from the device. The official Surface Thunderbolt 4 Dock, for example, is rated for up to two 4K@60 Hz external displays on Snapdragon models.
There is currently no USB4 or Thunderbolt 4 dock (Microsoft or third-party) that will provide three external monitors plus the built-in screen simultaneously. You can try workarounds such as DisplayLink docks or MST daisy chaining, but these approaches are often unreliable, can introduce errors or performance issues, and tend to cause more trouble than they’re worth.
The safe and reliable setup is to use the Surface built-in screen along with two external monitors at up to 4K@60 Hz.
I hope this helps clarify things.
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