E EGOWAY 65W 15V 4A AC Power Adapter Charger for Microsoft Surface Book Surface Pro 3 Pro 4 with USB Charging Port 6Ft Power Cord fit Model 1706 Replacement Power Adapter Charger for Microsoft Surface Book, Microsoft Surface Pro 3 and Microsoft Surface Pro 4 ; Microsoft Model 1706. Automatic thermal, overload cut-off, and short circuit protection. Output:15V 4A ,USB 5V 1A 5W, Come with 6Ft Power Cord Cable. Magnetic snap-in power adapter charges surface. the 65W Power Supply quickly recharges the battery, while the USB port allows you to charge another device at the same time. Warranty: 12 Months warranty, 30 days money return guarantee, 24 x 7 email support.