2 ATX POWER SUPPLY PLUGS
Why is there 2x 4 pin ATX power plugs. One that piggybacks on the main plug and one like the Pentium fan plug. They both say 12v ATX. The reason i ask is that when i first went out. the one that was on the main plug was not connected.
Computers & Internet - Gateway - GT4022 PC Desktop
Answers & Comments
Some motherboard/cpu setups require an additional 4-pin connector for additional power on the motherboard. The motherboard will require either a 20-pin or a 24-pin power connector (main power), and might need the additional 4 pin as well. If the motherboard will accept the additional 4-pin, then connect it!