: Indicates the device is connected to the Peripheral Component Interconnect bus architecture.
If you are seeing this as an "Unknown Device" or need a fresh installation, you should use the . PCI\VEN_8086&DEV_8C22 - Microsoft Update Catalog
The hardware identifier maps directly to the Intel 8 Series/C220 Series SMBus Controller . Specifically, this component is embedded within motherboards using Intel Haswell-generation chipsets (such as H81, B85, Q87, and Z87) and Lenovo systems, indicated by the Subsystem ID 17AA (Lenovo's PCI Vendor ID).
The is a low-speed communication interface used for:
: Fresh installations of Windows 10 or Windows 11 often lack explicit name definitions for 4th-generation chipsets. The OS sees the chip but cannot map its functions properly. pci ven8086 ampdev8c22 ampsubsys309f17aa amprev04 patched
. This device is part of your motherboard's chipset and handles communication between various internal components, such as temperature sensors and fan controllers.
The hardware identifier refers specifically to the Intel(R) 8 Series/C220 Series SMBus Controller Go to product viewer dialog for this item.
This technical guide breaks down the architecture behind this hardware ID and details exactly how to deploy the correct patches or driver configurations. Anatomy of the Hardware ID
Open a command prompt with Administrator privileges and type: pnputil /delete-driver /uninstall /force (replace with the matching name found in your device properties events log if a persistent ghost driver returns). : Indicates the device is connected to the
: Defines the specific subsystem (OEM board design). The hex code 17AA explicitly indicates the board or laptop was manufactured by Lenovo . REV_04 : Represents revision 4 of the physical silicon chip.
If this driver is missing or corrupted, you may experience erratic system behavior, such as incorrect power management, inaccurate battery readings, or random thermal shutdowns. 2. Why Do I Need a "Patched" Driver?
309F17AA (Lenovo-specific implementation) Revision (REV): 04 Commonly Affected Systems
I understand you're asking for a story based on a technical hardware identifier string. Let me break down what that string means first, then craft a narrative around it. unmodified operation of that REV_04 chip.
Three long blinks. Three short. Three long.
Download and install the latest Intel Chipset INF Utility . This is the "official" patch that tells Windows how to label the 8C22 controller.
While driver patching is a legitimate and necessary tool for embedded systems engineers and enthusiasts repairing legacy hardware, it is rarely the first solution for a malfunctioning storage controller. Before you alter a single byte of an .inf file or download a shady "patched driver" from a forum, ensure you have exhausted official support channels from Intel and Lenovo. Your data’s integrity—and the stability of your entire system—depends on the correct, unmodified operation of that REV_04 chip.