The Mobile 5th Generation Intel(R) Core(TM) PCI Express Root Port 5 - 9C98 is a system driver related to the PCI Express Root Port, which is a component of your computer's motherboard chipset. The PCI Express Root Port is responsible for managing communication between the CPU and connected devices via PCIe (Peripheral Component Interconnect Express), which is a high-speed interface commonly used for adding components such as graphics cards, network cards, or storage devices.

Specifically, the "Mobile 5th Generation Intel(R) Core(TM) PCI Express Root Port 5 - 9C98" driver enables proper functioning of this interface on a system with a 5th-generation Intel Core processor (also known as "Broadwell" architecture). The driver ensures that the PCIe lanes work correctly, supporting devices connected to the motherboard.