PEX4S232485 - StarTech.com 4 Port PCI Express PCIe Serial Combo Card

Serial adapter - PCIe - RS-232, RS-422, RS-485 - 4 ports - for P/N: BNDTB10GI, BNDTB210GSFP, BNDTB310GNDP, BNDTB410GSFP, BNDTB4M2E1, BNDTBUSB3142