What is a PCIe-IO Bridge Driver?

A PCIe-IO Bridge driver is software that allows the operating system (like Windows) to communicate with a PCI Express Input/Output (PCIe) bridge device on the computer's motherboard or expansion cards. This bridge component is a part of the PCIe bus architecture, responsible for connecting different I/O devices (e.g., graphics cards, network cards, storage controllers) to the system's CPU and memory via the PCIe bus.

In simpler terms, the PCIe-IO Bridge driver allows Windows to interface with the hardware that connects PCIe-based devices to the computer, ensuring proper functionality and performance.