Question about Corsair Graphite 780T

Hello, first of all, thank you very much.

But I can't find this connector on the mainboard & I've never seen it before. It's a plug with a small circuit board on it that can be clicked in on the right and left, I think.

Hello sunsun112
If you want to plug it into the mainboard, there should be a "System Fan" next to the connector (the mainboard manual should list where this is located). The advantage is that if you plug it into the mainboard you can run it in a controlled way, if you plug it directly into the power supply this is not the case.

The fan controller must usually be connected with a Molex 4-pin connector. This cable usually comes directly from the power supply unit.