Realtek is a manufacturer with strong technical strength. The wireless network cards it produces have always been good. One of the network cards: Realtek RTL8811AU Wireless LAN 802.11ac USB 2.0 Network Adapter, has been recognized by many consumers, Realtek manufacturers have built it into a high-speed wireless network card. It can automatically compress data according to actual usage, so that your data can be quickly sent to the network. If you want to use this function, you must install the specific driver provided by the manufacturer, If you plan to use the computer for a long time, you can consider using this network card. Realtek RTL8811AU Wireless LAN 802.11ac USB 2.0 Network Adapter has a very small heat generation and good stability. In addition, it also supports the sleep function. When the network is not busy, the chip automatically reduces the work frequency and save power, 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, It supports IEEE 802.11b/g/n/ac protocol, not only can connect to most routers, but also connect to other devices that support this protocol, such as mobile phones, wireless network cards, game consoles, etc, Finally, please install the correct driver for it, so that it can exert its maximum performance.