Here is something I found :
Hi, I have found the solution. If you go in device manager, click on the pci simple communications controller, go in property and then go in details. You will see a code like per example PCI/VEN_8086&DEV_27D8&SUBSYS...
The VEN code means vendor and the DEV code means device: in my case the vendor is 8086 and the device is 27D8.
Once you have the two codes, go to PCI Vendor and Device Lists
Enter the two codes and you should get the name of your hardware. From there you can search for a driver download for your hardware.
In my case the pci simple communications controller was a Microsoft UAA Bus HD audio. I also had another pci device that didn't work properly, using the same method I found out that my pci device was an HSF PCI internal modem with code number CX11252-11. I had a hard time downloading one of the drivers, after 6 or 7 times the download started so be patient if you have the same hardware.
Link : Driver question -PCI Simple Communications Controller