[20 Pieces] USB WiFi Adapter, Ultra-Compact Mini Wireless LAN WiFi Receiver, Wireless LAN Adapter, IEEE802.11n USB Network Adapter This USB wireless LAN adapter (Wi-Fi adapter) allows you to use wireless WiFi simply by plugging it into a USB port, no setup required. Supported OS Windows XP / 7 / 8 / 10 / 11 Standards IEEE802.11 b/g/n/2 Supports 2.4GHz communication of standard IEEE802.11n/g/b standards, and enables wireless communication up to 150Mbps. It can be used in a wide range of environments, including home routers, Wi-Fi hotspots, and pocket routers. *Wi-Fi may not be detected by some drivers on products that have not been updated for Windows for many years. Please check the version. Please research the driver update/installation yourself. [Notes] The only included item is the main unit; no instruction manual is included. To use, simply plug it into each port; no technical intervention such as settings or drivers is required. *We ship after confirming the connection at least twice for this product. If it does not respond or connect, it is likely a problem with your PC. Please check the version and settings yourself. Due to the above reasons, if you wish to exchange the product, you will be responsible for the shipping costs. Thank you for your understanding.