BF-440 is a universal serial device server that can make your industrial serial devices, such as, PLCs, flow meters, gas meters, CNC machines, and biometric identification card readers to be monitored from network. Support web management & firmware upgrade. PPPoE & DDNS protocol makes the user connect to Internet without static IP. BF-440 has 4 serial ports and one RJ-45 port, it provides a convenient and transparent way to establish an Ethernet connection that not only protects your current hardware investment, but also ensures future network expandability. By using BF-440, you can centralize serial device management and distribute management hosts at the same time.