STARTECH.COM PS74ADF-SERIAL-CARD 4-PORT SERIAL PCIE CARD, QUAD-PORT PCI EXPRESS TO RS232/RS422/RS485 (DB9) SERIAL

StarTech.com 16 Port PCI Express Serial Card - Low-Profile - High-Speed PCIe Serial Card with 16 DB9 RS232 Ports - Add 16 RS232 serial ports (DB9) to your low or full-profile computer, through a PCI...

StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 - Add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot - pcie rs485 - pci...