2 IN 1 USB OTG Adapter The USB-C & Micro USB to USB 3.0 A Adaptor adds a standard USB 3.0 Type-A port to your old Micro USB or newer USB-C OTG enabled phone/tablet or USB C/Thunderbolt 3 laptop, allowing you to do things like play games with wired or wireless Xbox One and PS4 controllers, backup files to an external flash drive, and access photos/videos stored on your camera without having to remove the SD cards . It's more convenient and efficient