• Rocstor Premium (5-Pack) USB 3.0 Type A Male to USB-C® Female Slim aluminum Space Gray Adapter Convertor provides you a quality adapter that enables you to connect an existing USB Type-C cable between the USB Type A port on your MacBook, MacBook Pro, computer, laptop or tablet and a USB host port. The Rocstor stylish slim adapter allows you to sync and charge your USB-C device. This adapter supports USB 3.0 data transfer. The reversible USB-C female connector plugs into a USB Type A port in either direction. Backed by Rocstors Lifetime Limited Warranty.