Modern versions of Windows require all drivers to have digital signatures. If you are installing a legacy industrial driver for the 60806A chipset, you may need to temporarily disable driver signature enforcement:

This guide provides an exclusive look at obtaining the correct driver for the 60806a PCI card (typically based on the NetMos NM9805CV chipset), troubleshooting installation, and ensuring your serial/parallel ports work seamlessly. What is the PCI Serial Port 60806a?

If the port is built into an enterprise motherboard (like an HP EliteDesk or Dell OptiPlex), this is likely the "SOL" (Serial Over LAN) driver found within the Intel Management Engine Interface package on the PC manufacturer's support page.

Windows will install the driver. The "PCI Serial Port" entry will vanish or transform into "Intel Management Engine Interface," and the yellow exclamation mark will disappear.

If you are trying to connect legacy industrial equipment, specialized POS systems, or older printers to a modern computer, you likely encountered a "PCI Simple Communications Controller" error or a missing driver for a card.

When Windows displays a specific hardware string or internal ID like "60806A" in system logs, it points to a specific vendor and device configuration on your chipset. Why the Driver is Missing

The safest location to download this driver is the support page of your computer manufacturer.

Extract the ZIP to a folder, e.g., C:\Drivers\60806A .

These drivers are frequently listed as "missing" on standard Windows Update. You can find legacy and updated versions from reliable repository archives.

By downloading Driver 60806A, you'll be able to:

Choose and point it to the folder you just extracted. Safety Warning: Avoid "Driver Updater" Scams

Extract the downloaded driver ZIP file to a known folder on your desktop.

Finding "exclusive" official downloads for 20-year-old hardware can be difficult, as many manufacturers no longer host them.

Temporarily toggle to Off and reboot to see if the device initializes. Update the System BIOS/UEFI

If the port updates but displays an error like Code 10 (This device cannot start) , there is a resource conflict in your system BIOS. Restart your PC, enter the BIOS/UEFI settings, find the or PCI Configuration section, and ensure that legacy Plug-and-Play (PnP) OS settings are enabled and that your COM port addresses (e.g., IRQ 4, COM1) do not overlap with other hardware. Conclusion

If you prefer a manual touch, visit the support page for your specific machine: