Dual-Port Serial Interface Cards
PCI-COM2S And PCI-422/485-2 - Acces I/O Products, Inc.
The PCI-COM2S and PCI-422/485-2 are dual-port, asynchronous serial communications cards designed for use in PCI-Bus computers. They are 6.5 inches (165 mm) long and may be installed in any 5V PCI slot in IBM and compatible computers. Each independent port supports RS-422 and RS-485 balanced-mode transmission/reception, and on the PCI-COM2S, RS-232 single-ended transmission/reception as well.