This motherboard had been modified internally. It has features like:
Bios update from 0406 to 1107.
ME system modified to ME8.1.
Updated microcodes from 2013 to 2019.
Xeon CPU support (maybe, you can give it a try. Not entirely sure)
Used AMIBCP to unlock exclusive features:
EC Turbo control core.
Hybrid power boost.
This helps the CPU to stay at constant bandwidth without being thermal throttled. With those updates, it ensures stability, re-calibrate it's power distribution and improving security. Since It has a missing pin, I add these features to ensure full safety and safe power distribution. If you want peak efficiency upon running this 1333/1600MHz motherboard into a 2800MHz, I recommend some thermal pads and heatsink to it's VRMs and it's ram inductor.