A:Answer The USB-C port can provide USB, display port, output power, and draw power for charging. Although we always recommend using the Surface Connect charger that comes with the device, we know there are times when USB-C charging is the only option available. Surface Book 3 charging times via USB-C will vary with the power of the charger being used. Surface Book 3 will work with any USB-C PD3.0 compliant charger from 7.5W to 95W, and a USB-C charger with equal or greater power than the in-box Surface Connect charger will charge at the same rate.