This adapter is used to extend a USB Type C female port to your old USB Type-A laptops or pc, it allows you to connect to USB Type-c cable. ??? Please NOTE: This adapter is designed for converting ordinary USB 3.0 female port on your PC/Laptop to USB-C female port to transfer data, it was not designed to transfer video, it could not extend monitors. Super Speed: built in VL160 smart chipset, supports double-sided (USB 3.0 A & USB-C) data transfer speed up to 5Gbps, make sure to connecting the USB 3.0 port. USB 3.0 A Male is the Host side,compatible with all USB 2.0 or USB 3.0 Laptop and PC; Built-in 56KO resistor ensures safe and data transferring performance. ???Please NOTE: USB 3.0 male side can ONLY be connected to host/source device, DO NOT connect it to target devices. ??? USB Type C Compatible with: Logitech StreamCam, Samsung Note 8, Galaxy S8/ S8 Plus, Google Nexus 5X/ 6P, Pixel C, Pixel 2, Pixel 2 XL, HTC 10, LG G5/ G6, LG V20, Lumia 950/ 950XL, OnePlus 2 3 3T 5 5 5T