The 5103S PCI serial interface provides one RS-232 synchronous serial port capable of data rates to 128K bps. The board implements all modem control signals and is Universal Bus (3.3V and 5V) compatible.
The 5103S ships with the standard size PCI bracket to allow installation in a full-size PCI slot. If you have a Low Profile PCI slot order the 5103.
Software support, critical for successful synchronous communication development, is provided through Sealevel’s SeaMAC synchronous serial driver. HDLC/SDLC protocols are supported as well as certain configurations of Monosync, Bi-sync, and Raw modes.