UltraPort2 - 2 x on-board DB9M RS232 ports, standard height Universal 3.3v/5v PCI serial card, 921Kbps/port wire speed, Enhanced modem support, 15kV ESD
UltraPort1 SI - 1x on-board DB9M software selectable EIA-232/422/485 serial port, low profile Universal 3.3v/5v PCI serial card w/ standard bracket, 921.6 Kbps on EIA-232, 3.6 Mbps on EIA-422/485, 25kV ESD, Low profile bracket included