? Surface Pro 3 Docking Station Charger? INPUT: 100-240V ~ 1.3A 50/60Hz (for worldwide use). Output: 12V-4A.Power: 48W. Connector size: 4.5*3.0mm ?Compatible models ?'Microsoft Surface Pro 3 Docking Station '(Old Version)Model 1627 1664 ?Note?This is a adapter for surface Pro 3 'Docking Station' , please compare the connector size and Adapter voltage 12V before add to cart. ?Security?100% New Direct from Manufacturer. Replacement chargers manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating.