What is the you are plugging in?
If the ASMedia bridge is working, but your Serial Port is not, you need the driver for the controller sitting on top of that bridge. Common chips include: MosChip (MCS98xx series) Oxford (OXPCIe series) asmedia asm1083 serial port driver windows 10
Try toggling "Compatibility Support Module" in your BIOS settings. What is the you are plugging in
Does the device show up as or "Standard PCI-to-PCI Bridge" ? Does the device show up as or "Standard PCI-to-PCI Bridge"
If you are certain the Serial Port isn't working due to the bridge: Right-click the device in . Select Properties > Details . Change the dropdown to Hardware Ids .
ASMedia does not provide drivers directly to consumers. They provide them to motherboard manufacturers (like ASUS, MSI, or Gigabyte). Visit the support page for your specific . Look under Chipset Drivers or Others .
Windows 10 includes generic drivers for PCIe-to-PCI bridges.