I recently did a clean install of Windows 10 on my older ASUS P8Z77-V LX motherboard and noticed a yellow exclamation mark in Device Manager under "PCI Simple Communications Controller."
If you don't need remote management features, you can simply right-click the device in Device Manager and select Disable device . The warning will disappear, and it won't affect gaming, audio, or networking. Final Note After installing, restart your PC. The exclamation mark should be gone. If you still see it, double-check that you installed the 64-bit driver if you’re on 64-bit Windows. Asus P8z77-v Lx Pci Simple Communications Controller Driver
Do download the driver from ASUS's official website for this board—the version there (v7.0.0.1144) is from 2012 and often fails to install on Windows 10/11. I recently did a clean install of Windows
Fixed: Missing PCI Simple Communications Controller Driver for ASUS P8Z77-V LX (Windows 10/11) The exclamation mark should be gone