This is a classic network card. Although Dell Wireless 5540 HSPA Mini-Card Modem is not the best network card in the world, its various practical functions allow you to have a stable network environment, It is compatible with most operating systems and can work normally even in the latest operating systems, 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, This network card also does a good job in terms of security. When it is connected to the router, it uses encryption algorithms to encrypt data by default, allowing you to browse information online with more confidence, In terms of speed, the speed of Dell Wireless 5540 HSPA Mini-Card Modem 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,As long as you install the corresponding driver and make it work normally, it will allow you to browse information on the Internet comfortably.