EZMAX&reg; Portable Mobile Power Charging Cable for Microsoft Surface Pro 3 12 Inch Windows 8.1 Pro Tablet + EZMAX NFC Tags Keychain Specially design for Microsoft Surface Pro 3 12 Window 8.1 Pro Inch Tablet Designed to meet or exceed your original manufacturer's ac adapter I/C Chip technology prevents your tablet's battery overcharging It is convenient to charge for your pro 3 tablet by mobile power supply Package includes: 1 x Charging cable for Microsoft Surface Pro 3 12 inch Tablet, 1 x EZMAX NFC Tags Keychain