SeaLINK+4.SC and SeaLINK+8.SC offer 4 or 8 serial ports that are software configurable for RS232, RS422, or RS485, eliminating need to open the enclosure to change jumper settings or dip switches. Adapters maintain their electrical interface settings locally, allowing host computer to be repaired or upgraded without reconfiguring serial ports. They include USB type B connectors to help prevent unintentional disconnection from standard USB cables.