After the chipset driver is installed, the “SM Bus Controller” unknown device should disappear. If not, manually install the (SB7xx series).
These boards were built with surprising durability. Years after the PCs they were inside should have been recycled, the 2a99 boards are still popping up on eBay and in budget "franken-builds," forcing a new generation of hobbyists to hunt for elusive legacy drivers . Pegatron Corporation 2a99 Motherboard Drivers
To understand what drivers you need, you must understand the board's architecture: After the chipset driver is installed, the “SM
NVIDIA’s Archive: Since the board uses an nForce 430 chipset, you can download the "nForce 4 series" or "GeForce 6 series" legacy drivers directly from NVIDIA’s official site. After the chipset driver is installed