No idea where to connect these case fan connectors to

[Jakers038]

My case (a generic brand one without a manual) has 4 fans which are, If I understood correctly, all connected to a single panel and that panel has a main cable going from it called PWM, except that it is not one cable, but three of them all different and my motherboard only supports 3 pin fans. I read online that you can connect a 4 pin PWM to a 3 pin motherboard, but that it will always run at max RPM or something, which is fine, but how do I even do that? How am I supposed to connect it if I don't know which of the three cables I need? The big one has an arrow on it for the + side I guess, but other than that, no idea what to do. The motherboard is H61MLV3 V7/8, here's a download page for the manual with a graph, which doesn't help me much https://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=685#download

 

 

(pay no attention to the cleanliness)

 

[svmlegacy]

3 minutes ago, Jakers038 said:

My case (a generic brand one without a manual) has 4 fans which are, If I understood correctly, all connected to a single panel and that panel has a main cable going from it called PWM, except that it is not one cable, but three of them all different and my motherboard only supports 3 pin fans. I read online that you can connect a 4 pin PWM to a 3 pin motherboard, but that it will always run at max RPM or something, which is fine, but how do I even do that? How am I supposed to connect it if I don't know which of the three cables I need? The big one has an arrow on it for the + side I guess, but other than that, no idea what to do. The motherboard is H61MLV3 V7/8, here's a download page for the manual with a graph, which doesn't help me much https://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=685#download

 

 

(pay no attention to the cleanliness)

It only plugs in one way. Line up the notch on the plug with the tab of the motherboard.