Where should i plug in my GPU Fan?

Evsy_D

Reputable
Mar 16, 2014
1
0
4,510
Hi guys,

Sorry if this sounds like a stupid question, but i have just got a new computer with an Asus H81M-K motherboard and i'm unsure where to plug in my GPU fan. Apart from the CPU fan socket, i can only see one CHA_FAN socket, whilst on my old motherboard i used to have the fan connected to an OPT_FAN socket. So my three questions are as follows:

1) What is the difference between CHA_FAN and OPT_FAN (apart from one meaning chassis and one meaning optional)?

2) Is it ok to plug the GPU fan into the CHA_FAN socket rather than an OPT_FAN socket?

3) My fan cable has a 3 pin connector, whilst the CHA_FAN motherboard socket is 4 pin. Is it still possible to connect this, or will it not work correctly?

Thanks in advance for your help as i just want to make sure i don't cause anything to 'blow up' ;)