Advantech provides a robust line of multiport serial cards for field devices that use the RS-232/422/485 serial communication protocol. These rugged solutions are available for ISA, PCI expansion and for the PC/104 board form factor. With industrial-grade protection, Advantech multiport serial cards help to avoid system damage in harsh environments. Advantech’s Multiport Serial Cards are designed to accommodate multiple high performance peripherals Just click on the tab for the proper board standard you require below.