15V 4A Charger Power Supply for Microsoft Surface Book Surfa

15V 4A Charger Power Supply For Microsoft Surface Book Surface Pro 3 & Pro 4 TabletProduct details • Charge and power your laptop with this Laptop Charger. This laptop power supply is engineered with enough power to deliver a strong charge to any compatible laptop. • This unit gives you surge protection, over-current protection, voltage protection and over-temperature protection to keep your laptop operating and charging at the correct voltage.