4-PORT SERIAL PCIE CARD RS232/422/485

4-Port USB-A PCIe Card USB 3.2 5Gbps

4-Port PCI Express RS232 Serial Adapter Card – 16950 UART – 256-byte FIFO Cache – ASIX AX99100 – Full Profile Bracket – Replacement for PEX4S952 (PEX4S953)

8-Port PCI Express Serial Card – 16550 UART RS232 – PCIE Low Profile Bracket – DB9 Serial Card (PEX8S1050LP)