This is a USB 3.0 A (male) to Micro-USB 3.0 B (male) cable. It was designed for data transfer and charging devices. This product is compatible with Samsung Galaxy Note 3, Western Digital My Passport Essential, Seagate External Hard Drives, and other external hard drive devices that use the same type of connection. The transfer speeds of this charging transfer cable is 5 Gbps. Our cable is RoHS compliant and backwards compatible with USB 2.0/1.1. Double-shielded, twisted-pair data wiring minimizes cross talk for error free SuperSpeed data transfer rates Increased device current draw to better provide power for High power demand devices Full-duplex data transmission support for new transfer types in the future USB-A to Micro-B SuperSpeed USB 3.0 with 5 Gbps signaling rate offering 10x performance increase over Hi-Speed USB. Sync-N-Go technology that minimizes user wait-time. Provides optimized power efficiency. Gold plated connectors for corrosion resistence ensuring consistant and reliable conductivity. Fully shielded and reduces cross talk and interference with aluminum undermold contact