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65 watts... That isn't exactly important though. You can use a charger with a higher wattage than the original as long as the voltage is the same. Watts = volts X amps. The unit will only draw whatever amps it requires as long as it's the right voltage. From Microsofts website... All these models will take the same charger. *Power Supply recommended for Surface Book 2, and Surface Book (1st Gen) computers. Compatible with Surface Laptop 3, Surface Laptop 2, Surface Laptop, Surface Pro X, Surface Pro 7, Surface Pro 6, Surface Pro (5th Gen), Surface Pro 4, Surface Pro 3, and Surface Go. I recommend going with a higher wattage 65+ for faster charging but the lower ones will work too.
Sorry, there was a problem. Please try again later.65 watts. Please disregard the answer that says "watts don't matter" - they do. If you have your laptop connected to dual displays, through a pluggable or other adapter, this charger will overheat and cutout. Unfortunately, the additional CPU and GPU power required for dual displays is quite high, about 80 watts. You will need to purchase the 127 watt power supply.
Sorry, there was a problem. Please try again later.65 W
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