Unfortunately, the Pro Hub Slim is not compatible. Although the Surface Laptop has two USB-C ports on the side, the connectors on the Pro Hub Slim are designed specifically for the USB-C ports on Apple Mac laptop computers. In case we recommend any of our cabled adapters like the following: 

https://satechi.net/products/type-c-multi-port-adapter-with-ethernet-v2?variant=45020091145