Scrap Computer Motherboards: The motherboard is the large circuit board that connects the innards of the PC together. All the components communicate with each other through the motherboard. The motherboard is rich in precious metals and has several of the most valuable parts of the PC attached to it.

The board itself has many gold plated connectors and pins. Older and high-end motherboards (such as those found in rack servers, telecommunications equipment, or military test equipment), often have gold in their traces and components. Motherboards are one of the most value-dense portions of the PC.