Usb Type-C to USB Type-A cable connects a USB-C mobile device to a wall charger This 20-inch USB-C 3.1 To USB-A cable allows you to connect any device with a USB-C or Thunderbolt 3 port, including MacBook's, Ultrabook's and Chromebooks, to a USB-enabled computer, charger, hard drive or other peripheral for the purpose of charging, powering, syncing or transferring data. Its 20-inch length makes it easy to carry in your briefcase or laptop bag for quick downloads and file transfers on the go. Charges devices and transfers data at fast USB 3.1 Gen 1 speeds The USB-C to USB-A cable supports USB 3.1 Gen 1 data transfer rates up to 5 Gbps, which is 10 times faster than USB 2.0. The power delivery cable also provides power output up to 3a (60 watts), which is more than sufficient for charging, syncing and powering compatible devices. The cable is backward compatible with previous USB generations, allowing you to use it with older equipment. Reversible USB-C connector attaches in either direction unlike traditional USB cables that connect in only one direction, The reversible USB-C male connector plugs into a USB-C or Thunderbolt 3 port in either direction for a fumble-free connection every time.