Driver Pci Simple Communications Controller -

If fixing the PCI Simple Communications Controller did not resolve system slowness, check for other "Unknown Devices" in Device Manager. Often, the SM Bus Controller driver is also missing, which affects the speed of data transfer between the processor and system peripherals.

Windows often finds the necessary driver automatically through optional updates. Open > Update & Security > Windows Update . Click Check for updates . Click on View optional updates (if available). driver pci simple communications controller

Once you have installed the Intel Management Engine Interface driver: If fixing the PCI Simple Communications Controller did

Download and install the driver compatible with your operating system (e.g., Windows 10/11 64-bit). Open > Update & Security > Windows Update

Run Windows Update → Check for optional driver updates. Many OEM drivers are delivered this way.

Sometimes, Windows Update has the driver but hasn't installed it yet.

Method 3: Download Driver from Manufacturer Website (Most Reliable)