: The INF files tell Windows which lanes of traffic to use for the NVMe SSD and the GPU.
The Chipset (located on the motherboard, usually under a heat sink) is actually the nervous system. It is the silicon that connects your CPU to everything else that isn't RAM or a Graphics Card (mostly). It controls the USB ports, the SATA storage drives, the PCIe lanes for your Wi-Fi card, and the system’s power management. chipset intel driver
: Your mouse and keyboard stop stuttering because the controller is finally recognized. : The INF files tell Windows which lanes
After installing the proper chipset driver, the names change. You will see specific engineering codes like "Intel(R) Xeon(R) E3 - 1200 v6/7th Gen Intel(R) Core(TM) PCIe Controller (x16) - 1901." It controls the USB ports, the SATA storage
The "feature" here is . Without it, your high-speed NVMe SSD might fall back to slower transfer modes, or your USB ports might randomly disconnect under heavy load because Windows isn't managing the power states correctly.