Startech.com 4 Port Serial PCIe Card Quad Port PCI Express to RS232/RS422/RS485Add serial communication support to a desktop computer or Small Form Factor (SFF) system, using this 4 Port Serial PCI Express Card. The four DB9 ports can be independently configured to support RS 232, RS 422, and 2 4 wire RS 485 standards, for communication with compliant serial peripheral devices. Per Port Serial Configuration This PCIe Serial Card is equipped with on board DIP switches, enabling each DB9 serial port to operate in RS 232, RS 422,
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Startech.com 4 Port Serial PCIe Card Quad Port PCI Express to RS232/RS422/RS485