Where do i plug this in

[Dota Lord]

So i got a fan but it has a small 2 pin connector, where on my motherboard must i plug it in. 

[Kilrah]

That's not a PC fan plug so the mobo won't have a socket for that. You'd need to either replace it or hack something together.

[Dota Lord]

2 minutes ago, Kilrah said:

That's not a PC fan plug so the mobo won't have a socket for that. You'd need to either replace it or hack something together.

Ok thank yoy

[Bismut]

2 minutes ago, Kilrah said:

That's not a PC fan plug

Being pedantic, that IS a PC fan plug, just not the one we usually have on ATX Motherboards.
I have one of those on my GT 520 (bought for ~5€), I would expect it to just take 12V and that's it, it'll always run at full speed, likely quite loud. You could cobble something together do change the voltage, but I'd advise you to just buy another fan.

[Tan3l6]

Looks like some kind of a videocard fan header.

[191x7]

That looks like a fan from a PSU.