With 1,500 Vdc port-to-port isolation, Model C4-104.485+I, part number 3547, optically isolated 4-port adapter protects systems from ground loops and voltage transients. Each port is software configurable for full-duplex RS422/485. It includes Oxford 16954 UART with 128 byte transmit and receive FIFOs for communications up to 921.6 Kbps. SeaCOM suite of drivers is used for BERT, throughput monitoring, loopback tests, and transmitting test pattern messages.