Atheros is a manufacturer with strong technical strength. The wireless network cards it produces have always been good. One of the network cards: Atheros AR5009 802.11a/g/n WiFi Adapter, has been recognized by many consumers, In order to ensure a faster network speed, the Atheros manufacturer uses a high-quality circuit board as the bottom plate, so that all components on the circuit board are in good working condition, and the electronic interference generated by each device in the main computer box to Atheros AR5009 802.11a/g/n WiFi Adapter is very small, The most commonly used wireless data exchange protocols are 802.11b and 802.11a. Atheros AR5009 802.11a/g/n WiFi Adapter also supports these standard protocols. Using these protocols, it can be connected to various new or old router devices, In the device control panel, you can set the Atheros AR5009 802.11a/g/n WiFi Adapter to reduce its signal transmission strength, so that it will generate less heat and work more stable, Nowadays, more and more people are shopping online. Atheros manufacturers also take this into consideration, so they add encryption function to Atheros AR5009 802.11a/g/n WiFi Adapter, which can encrypt data before transmitting to external devices. However, this function is not enabled by default. The encryption function will be enabled only when you set it in the control interface of the driver, If your network card does not work normally, please check whether its driver is installed correctly, because this network card will not break easily.