snippet: This IO Crest SI-PEX15043, XR17V358 series Multi-I/O PCI-E controller cards are high performance RS-422/485 serial interface controllers for home and industrial users. They are compatible with industrial standard 16C550 UART, which conveniently provide a low... <a href="/products/syba-si-pex15043-2-port-rs-422-485-serial-pci-e-x1-card#shortDescriptionLink">Read more</a> (Page 1)