Corsair H80i fans not spinning up

[DKRON]

So just finished my new build and everything is perfect and quiet but I did notice the corsair h80i fans are not spinning yet, temp idles around 40C and only gets up to 50c while using fire-strike extreme, I have not plugged in the USB header for corsair link as of yet because I have no more spare headers on the motherboard. is this normal?

 

[nickc]

U did not tell any thing about u'r build like what MOBO and what headers are u plugged into, as far as the temps that is fine, although 30 for doing nothing would be better, but 40 is fine. No as to the normal, are u shure u are plugged in right, and secure?

 

[DKRON]

Sorry didn't think it was relevant, I'm running:
CPU: i7 5280K
MB: MSI gaming 7
Ram: 16GB corsair
Graphics : MSI GTX970 SLI
Windows 7 Pro 64x

Had not plugged in the USB header for it because I had none left so I just plugged the fans into the MB fan headers instead and they are spinning up now and its now idling at 28c and max at 44 so nice a cool and still whisper quiet

 

[nickc]

That is better, and a max at 44C is great.