Brushless DC Fan – Gaming PC?

My brushless DC fan has a small 3-hole plug, which I have already plugged in.

But what about the larger 4-hole plug? Do you have to plug it in?

I can't find a suitable connection nearby.

When I unplugged it (to clean it), I forgot whether the 4-hole plug was plugged in or not.

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Rekthoven
8 months ago

is unfortunately difficult to identify the plug precisely with the aid of holes.
But if this is an ARGB fan, the 3pin is presumably for the lighting and the 4pin pwm connection for the fan to turn the