Question Connect Sentey X20 RGB to mother

[Cirices]

Hello. I have a Gigabyte B450M DS3H and it has a 4 pin called "Led CPU". Also I have the front RGB of the case connected using it's molex but it have a 3 pin connector too. What will happen If i connect that 3 pin connector to the 4 pin "Led CPU"? because i need that molex for one more fan

 

[popatim]

I couldnt find a manual for that case so I've no idea what it is for.

 

[Cirices]

I couldnt find a manual for that case so I've no idea what it is for.

Thank you. Anyway it was my bad. After better looking I found that 3 pin isn't from the case RGB lol. I'm sorry for the post