PCI Simple Communication device is probably an old dial-up modem. That's how they were marked when they were widely used to acces internet, some years ago. If you were updating and old computer, and ported all PCI device to the new, maybe there was an old modem in there
It will take you to the Intel Download Center, and it has already auto-searched for the software you need. Download the Intel ME: Management Engine Driver (dated 7/25/2011, version 18.104.22.1687) which is the top result. I know that it says it's for Intel boards, but it will work for any board with a 61/67 chipset.
That's generally true, but don't you prefer to install the newest version of the drivers when you get the chance? I know I do. Unless Gigabyte is really on the ball, the drivers from Intel's site are newer.