The Surface Hot Plug driver refers to a software component used on Microsoft Surface devices (such as Surface Pro, Surface Laptop, Surface Book, etc.) that manages the hot-plugging functionality for external devices, such as USB peripherals, docking stations, and external displays. "Hot-plugging" refers to the ability to connect or disconnect hardware devices while the system is running without needing to restart the computer.

On Surface devices, this driver helps the system to detect, configure, and manage external hardware devices when they are plugged in or removed. The driver ensures that external devices (like USB drives, monitors, or docking stations) are properly recognized and function seamlessly with the Surface hardware.