. It allows the operating system to communicate with the motherboard's firmware for tasks like power management and system security. In some rarer cases, it might refer to an internal analog modem. How to Find and Install the Right Driver 1. Use Windows Update Before hunting for manual downloads, check Windows Update. Settings > Windows Update Optional Updates
Without the correct driver, your Acer Aspire 5742 may still boot and run, but you will notice: Acer Aspire 5742 Pci Simple Communication Controller Driver