There are two primary ways to obtain these drivers:
Before downloading, determine your chipset model:
(best for OEM boards like Dell, HP, Lenovo, ASUS, MSI, Gigabyte)
In the past, motherboards had a "Northbridge" (handling high-speed data like RAM and graphics) and a "Southbridge" (handling slower peripherals like USB and audio). Modern Intel platforms have moved most of these functions directly into the CPU, but a Platform Controller Hub (PCH) remains on the motherboard.
If the Device Manager still shows an "Unknown Device" after installing chipset drivers: