No adapter exists that converts the older Surface Dock/docking-station connector (Surface Pro 1/2/3/Surface 3 style with the large side connector) to USB‑C for use with newer Surface Pro devices.
Older docking stations and the original Surface Docking station models are designed specifically for the devices they list as compatible and are not forward‑compatible with newer USB‑C–based Surface models. For example, the Docking station for Surface Pro 1 and Surface Pro 2 is explicitly only compatible with those two models.
To use newer Surface Pro devices that charge and connect over USB‑C or Surface Connect, a compatible modern dock (such as Surface Dock, Surface Dock 2, Surface USB4 Dock, or Surface Thunderbolt 4 Dock, depending on the device) is required rather than an adapter for the old dock.
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