Snap in the versatile 65W Power Supply and power up Surface Book, Surface Pro 3 and Surface Pro 4 quickly while you work. Made exclusively for Surface and designed to match the look and feel of your Surface, the Microsoft Q4Q-00001 65W Power Supply quickly recharges the battery, while the USB port allows you to charge another device at the same time. Magnetic snap-in power adapter attaches to your Surface with ease. Slender cord and adapter allow access to outlets behind furniture or in other tight spaces. Plug your phone or headset into the USB port to keep your other devices charged and ready to go at the same time as your Surface.