The TP-Link TL-WN821N 300Mbps Wireless N USB Adapter is a high-speed USB adapter that allows you to easily connect your computer to a wireless network. With a maximum downstream data rate of 300 Mbps and a maximum wireless data rate of 300 Mbps, you can enjoy fast and reliable internet connectivity. The adapter is from TP-LINK, a trusted brand known for its reliable networking products. Its compact design and USB connectivity make it easy to use and suitable for various home networking needs.