The cable is compatible with all devices with a Micro USB 3.0 connector, such as the Galaxy Note 3. May not be compatible with older micro-USB 2.0 devices The cable has USB 3.0 for the fastest possible data transfer. USB 3.0 supports speeds of up to 4Gbit/s meaning you can transfer HD videos to your phone in seconds rather than minutes. USB 2.0 ports only support up to 500mAh which means charging will take 6 - 7 hours, this data cable from Samsung supports 800mAh over USB 3.0 nearly halving the charge time. 5 Gbps signaling rate offering 10x performance increase over Hi-Speed USB Provides Optimized Power Efficiency