Supporting data rates to 921.6 Kbps, SeaLINK/PC.SC (1-port) and SeaLINK+2/PC.SC (2-port) respectively add 1 and 2 serial ports to any PC via internal USB connection. Serial ports are software-configurable for RS-232, RS-422, or RS-485, and all configuration and electrical interface selections are handled through driver software. USB-powered devices maintain their electrical interface settings in hardware and appear as standard COM ports to host computer.