If your application requires a number of connections to serial devices such as modems, then a multiport serial board is a must. Multiport serial board products come in a variety of specifications, including number of ports, type of interface used (such as CAN, Interbus, RS232, RS485, USB 3.1, and Mini PCI Express), and connection type. It is also possible to choose multiport serial board products that can tolerate a range of temperatures, from -40°C up to 85°C, which means there is a solution available for almost all working environments.