The Comtrol 98020-9 RS422 Quad Port PCI Serial Card is a RocketPort PCI card that adds four RS-422 serial channels to a PC via a standard PCI slot. It provides four RS-422 differential serial ports with DB9 male connectors, enabling multi-port serial communication on a single PCI bus. This quad-port card is designed for environments requiring reliable, differential RS-422 data transfer to multiple devices. Associated part numbers listed with the product include 5300007 and 5000004.
