WN204 high speed switching redundant network card is a 4 port gigabit network interface card with redundant link high speed switching function.In addition to providing high-performance gigabit network interfaces for desktop, server and other network devices, WN204 innovatively provides independent redundant links, and has the high-speed automatic switching ability of master/backup links, switching time delay 1sm, making the network truly capable of "always online" at the level of link connectivity.