USB 3.1 Type-C to USB 3.0 A-Female Adapter, Gray, for Apple MacBook 2015 and others Converts USB 3.1 type-C port to regular USB 3.0 port, supports USB 3.0 high-speed data transfer of 5Gbps. For using existing regular USB 3.0/2.0 accessories & devices on newer USB 3.1 computer/tablet/smartphones. Works with USB portable external hard drive, USB flash drive, USB card reader, USB mouse/keyboard, etc. Perfect for Apple MacBook 2015. Works with most smartphones with type-C port; e.g. LeTV S1, S1 Pro/Max.