This issue is caused when Microsoft Windows does not properly detect the chipset or videodisplay.
Corrupt or missing motherboard or chipset drivers
The decision is made by the driver for the connector, specifically the USB connector manager (UCM) client driver. The driver does so by communicating with the connector's.
Device ID Device Name More; PCI: 1415: Oxford Semiconductor Ltd: c308: EX-44016 16-port serial: Vendor Device PCI: 1415: Oxford Semiconductor Ltd: 9510: OX16PCI954 (Quad 16950 UART) function 1 (Disabled) Vendor Device PCI: 1415: Oxford Semiconductor Ltd: 9511: OX16PCI954 (Quad 16950 UART) function 1 (8bit bus) Vendor Device PCI: 1415: Oxford. 3 Right click on the My computer icon and push Properties tab then. Choose Hardware tab. Click on Device Manager button. 4 Find your OX12PCI840 PCI Parallel port device in the list and press double click on the multifunction device. Click Reinstall driver button. 5 Choose Install from the specific location and click on the Browse button.
Download and install the latest chipset and video card drivers. If you or someone you know built your computer, it came with the motherboard CD. This CD contains the chipset drivers. Otherwise, you can find drivers for all the major chipsets on our motherboard drivers page.
Corrupt or missing video card drivers
If installing the latest chipset or motherboard drivers doesn't resolve your issue, make sure you have the latest drivers installed for your video card. For a listing of video card drivers, see our video card drivers page.
Other PCI device that Windows cannot identify
If you tried the above two steps and your Windows Device Manager still contains an Unknown PCI device, likely the device cannot be identified.
If you that the device not being identified is installed, we suggest you obtain the latest drivers for that device. A listing of drivers is on our drivers page.
If you have recently finished installing or reinstalling Windows onto the computer and are getting the unknown PCI device, we suggest you manually identify the PCI device through the registry.
Additional information
Oxford Port Devices Driver License Test
- See the PCI and drivers definition for further information and related links.