Belkin Pro Series USB-A to Micro USB-B Cable with Gold-Plated Contacts (Black, 6 Feet) Reduces crosstalk and interference with aluminum undermold shield Molded strain relief construction for flexiblility, durability, and fit 24k gold-plated copper contacts provide optimal conductivity USB-A and Micro USB-B connectors for connecting modern handheld devices Backed by Belkin Lifetime Warranty