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This is 36W Power Supply and power up Surface Pro 3 while you work. Designed to match the look and feel of Surface Pro 3, the 36W Power Supply quickly recharges the battery. The USB port allows you to charge another device such as your phone at the same time.
Designed exclusively for Surface Pro 3 Includes a USB port for charging additional devices
Magnetic snap-in power adapter charges Surface.
Compatible with MICROSOFT SURFACR PRO3 12V 2.58A 36W power supply with USB 2.0 Connector
This is 12V 3.6A 36W with USB 2.0 Connector power supply for Microsoft surface pro3 tablet PC Condition: 100% new Color:Black Size: 90x50x22mm
E-best 36W Power Adapter Compatibe with Microscoft Surface Pro3 12V 2.58A 36W Tablet Pc 8 Ft Power Cord Included - B00QI36C4Q