For gold recovery from computer parts and other electronic scrap, we have to apply different recovery methods.
To remove gold from gold plated fingers and connectors we can use cyanide process both chemically and electrically.
If the layer of gold on the connectors is thick then the nitric process can be applied.
If we have the stuff which doesn’t have base metals like copper, then nitric process will not give us the desired result. For such type of electronic waste we need to apply aqua regia process.