Last updated: 2026
If you’ve recently installed Windows 10 or performed a hardware upgrade, you might have opened Device Manager and seen a yellow exclamation mark next to "PCI Simple Communications Controller." This unrecognized device can be puzzling, but it’s a common and easily solvable issue. What is the "PCI Simple Communications Controller"? The "PCI Simple Communications Controller" is not a specific piece of hardware but rather a generic placeholder Windows uses when it detects a device on the PCI bus (Peripheral Component Interconnect) that it cannot identify or find drivers for. Last updated: 2026 If you’ve recently installed Windows