If "CAP-3GA000" refers to a specific real-world industrial part (such as a specific capacitor, valve, or circuit breaker) that I have missed in the context of your request, please provide the manufacturer or the industry context, and I will happily rewrite a factual technical description for you.
The cap-3ga000.chd file, which must be placed in a subfolder named sfiii2 within your ROMs directory. Reddit·r/OpenEmu Requirements to make Street Fighter III MAME ROM's work? cap-3ga000