The almost-completed motherboards are manually buffed and brushed to
smooth down the solder joints at the bottom of the motherboard and remove any
loose solder. The masked workers who do this thankless job are confined
in little cubicles of plastic to prevent stray particles from
contaminating the assembly lines.
in the building? Cleaning the motherboards post-solder
In the next series of steps, workers adds the last couple of necessary components onto the board. Any required
chipset heatsinks are added here as well as the plastic CPU retention
bracket, and motherboard battery. When this is complete, the boards are sent
off to Quality Assurance for testing.