: The Device ID identifying the specific hardware piece as the Intel 8 Series/C220 Series SMBus Controller .
The hardware ID string represents the Intel 8 Series/C220 Series Chipset Family SMBus Controller . This critical motherboard component monitors system voltage, motherboard temperatures, and manages low-speed system communication links.
REV_04 indicates the silicon revision of this controller. It's not an error level or severity; it's simply the hardware version, which can be REV_04 , REV_05 , etc.. This is important for driver development because a driver might need to behave slightly differently depending on the chip's revision.
Let me break down what this likely represents:
Duplicate an existing line within that block and edit it to match your exact hardware identifier string: pci ven8086 ampdev8c22 ampsubsys309f17aa amprev04 patched
Communicating with voltage regulators and managing sleep states.
: Users deploying non-native operating systems (like macOS via OpenCore) often inject custom ACPI/DSDT table patches. These patches rename or re-route the SBUS device to ensure proper sleep/wake cycles. Step-by-Step Resolution Strategies
Users look for a version of this driver for three distinct technical scenarios:
The latest official drivers for this device are typically provided through the Lenovo Support Portal or the Microsoft Update Catalog . : The Device ID identifying the specific hardware
: Indicates the device is connected to the Peripheral Component Interconnect bus architecture.
: This points directly to the Intel 8 Series / C220 Series System Management Bus (SMBus) Controller . This silicon is found on Haswell-era motherboards (such as H81, B85, H87, and Z87 chipsets).
Often, this device appears with a "Yellow Bang" (exclamation mark) in Device Manager or as an "Unknown Device" because the default Windows installation doesn't automatically assign the Intel Chipset null driver to it. A patching script usually performs the following:
The term in this context often refers to using the Intel Chipset Device Software (INF Update Utility) to provide the OS with the correct naming and configuration for the hardware, rather than a traditional functional "driver" that controls the device. How to Install the Correct Driver REV_04 indicates the silicon revision of this controller
If you are still experiencing issues, it is recommended to search specifically for "Intel Chipset Device Software 10.1.1.44" or later, which often includes patches for the 8 Series/C220 series controllers.
. This device is a critical component for system communication, often found in professional-grade machines like the . What is the Intel 8 Series SMBus Controller?
Using a patched driver is typically a workaround for one of these specific situations: