Pci Ven-8086 Amp-dev-8c22 Amp-subsys-309f17aa Amp-rev-04 [hot] May 2026

You are likely using a . You have installed or re-installed Windows (likely Windows 10 or Windows 11), and now you see a yellow exclamation mark in Device Manager labeled "Unknown Device."

If you have found yourself staring at a cryptic string of characters in your Windows Device Manager—specifically "PCI VEN_8086&DEV_8C22&SUBSYS_309F17AA&REV_04" —you are not alone. This seemingly nonsensical code is the hardware ID for a specific component inside your computer that is currently missing its driver. pci ven-8086 amp-dev-8c22 amp-subsys-309f17aa amp-rev-04