Effortlessly and quickly charge your Surface Book 3 for Business with this versatile 127-watt power supply, which includes an additional USB port for charging another device at the same time. Included with 15-inch Surface Book 3 for Business.Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply Microsoft, Power Supply