This USB 3.0 cable is great for connecting an external hard drive and other devices requiring a 3.0 micro B connection. USB 3.0 uses less power, but has increased power output - up to 4.8 Gbit/s. Compared with the USB 2.0 transmission speed, USB 3.0 is 10 times faster. You can use this cable for Mac or PC applications. It is also backwards compatible so you can use it for devices that are USB 2.0 or 1.1 compliant. Sturdy, with gold-plated connections, this USB 3.0 cable can be disconnected and reconnected time and time again without signal