Syba SI-MPE15048 2 Port Serial Mini PCI-e Controller Card (RS-422/485)

PCIe 2 Port RS232 Serial Card DB9 16Mbps Controller WCH382 Low Profile Bracket

Mini PCIe RS232 Serial Card 2 Port DB9 Multi Port I O Card Automatic Flow Con...

Advantech PCIE-1602C-AE Dual RS-232/422/485 High Speed Serial Port PCI-E Card

Black Box IC983C PCIe Async Serial Card 2-Port RS-232/422/485 DB25

PCI-E To 4-ports RS485/422 Serial Port PCIe Converter Adaptive Expansion Card

Uotek PCIe to 2 ports RS-485/422 High speed Serial adapter card.

PCIe to RS232 Serial Expansion Card CH382L 2S, Industrial COM Adapter Controller