Geeetech

I have the pictured GT2560 Rev A board, and was wondering if anyone knows what the 2 pin header is for, as well as the 8 pads that look like a pin header would have been there? Interested in if the 8 pads are NOT connected to anything, so they could be used to solder pins, then jumper wires from unused I/O pins on the Mega 2560 to those pins.

Hi, 2pin is a switch on the jumper cap of the motor driver board,
8 holes are reserved for welding holes.
You can refer to the motherboard schematic diagram: https://www.geeetech.com/download.html?download_id=43