This is a classic network card. Although Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband DM Port (COM5) is not the best network card in the world, its various practical functions allow you to have a stable network environment, 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, In terms of security, because it uses a complex encryption protocol, you don’t have to worry about your information being leaked online. Even if the information is intercepted by hackers, you won’t know the real content of the information, The original intention of Dell manufacturer to design this wireless network card is for those who have high requirements for network speed. Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband DM Port (COM5) can not only work well by itself, but also can be combined with wireless network cards of the same model to form a parallel working mode, so as to increase the bandwidth of the network, which can speed up the network data transmission speed, It is made of a multi-layer PCB board, which can shield most of the external electronic interference, and its stability is very high. Even if there is a wall, it can receive most of the signal from the router, If your network card does not work normally, please check whether its driver is installed correctly, because this network card will not break easily.