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To connect monitors or printers to the PC, a PCI serial port is required.
A driver is an important part of any system that is used to communicate the hardware and the software.
A PCI Serial Port driver is necessary to ensure the peripheral machine can be connected properly.

However, the PCI Serial Port driver doesnt always work well.
Sometimes you run into the issue of PCI Serial Port driver missing or PCI Serial Port driver not detected/found.
Sometimes you might see a yellow mark with the driver in rig Manager.
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How to fix PCI Serial Port driver issues on HP, Lenovo, Dell, or other PCs?
Move to the next part.
According to reports, you may also get the message Windows was unable to set up the driver.
you’re free to go to the second method to fix the driver issue.
Download and Install PCI Serial Port Driver
1.
Firstly, check your PC model, system architecture, serial number, etc.
- opt for downloaded driver and install it on your PC.
you could run a driver update tool to update the driver to a new version.
Driver Easy, Smart Driver Care, Avast Driver Updater,IObit Driver Booster, etc.
can be your good assistants.
How to update drivers in Windows 11 to fix some errors or improve PC performance?
This post gives you some efficient methods for driver update.
Just try one of the ways as stated above to fix the issue.