TP-LINK TL-WN821N 11N Wireless Adapter is a network card launched by TP-Link manufacturer. Many computer manufacturers integrate this network card into the whole product, In terms of speed, the speed of TP-LINK TL-WN821N 11N Wireless Adapter has reached the current mainstream level. It allows you to watch high-definition network videos smoothly, and it can process some simple network data packets by itself, disassemble the data packets into raw data and send them to the application layer. This will save a lot of CPU resources. But to realize this function, you must install the correct driver for it,In addition, if you are particularly concerned about security, it can provide encryption function. You can set it in the control panel of the drive device, and let it encrypt the data before transmission, Due to the low power consumption of this network card, even if the computer is running for a long time, the network data can be transmitted smoothly, and the data loss rate is very low. In such a low power consumption situation, achieving this level really makes People admire, It is compatible with the current mainstream wireless protocols: 802.11b and 802.11a, so you can use it to establish network connections with various wireless routers, If your network card does not work normally, please check whether its driver is installed correctly, because this network card will not break easily.