1. First, you can look at the model of the wireless network card. Right-click Desktop Computer-Administration-Device Manager-Network Adapter. As shown in the figure, this wireless network card is INTEL's 5 100 and supports 802.1a \ 802.11g \ 802.1n wireless specifications.
2. If the model of the wireless network card is not marked with specifications, you can also open the advanced properties of the wireless network card to see. Generally, there are corresponding fields in it.
3. If it doesn't work, you can use the model of wireless network card to Baidu, and you can find its corresponding specifications.
Friendly reminder: Among the ISM non-dedicated frequency bands, the 5GHz band (5. 15-5.850GHz) is mainly used for microwave medical treatment. In China, the frequency band of 5G is 5.725-5.825GHz, with ***4 channels. Compared with 2.4G, 5G has the characteristics of fast transmission speed and less interference.