Case fan questions

[Homerfan2323]

I recently received this case: https://pcpartpicker.com/part/rosewill-case-blackhawk

And I joticed that the case fans come with a molex and a 3 pin connecter so my questions are

Do I plug in the molex to my power supply or the 3 pin into Moba? Both or just 1. If so then which do I plug in.

 

[Havo_k]

I recently received this case: https://pcpartpicker.com/part/rosewill-case-blackhawk

And I joticed that the case fans come with a molex and a 3 pin connecter so my questions are

Do I plug in the molex to my power supply or the 3 pin into Moba? Both or just 1. If so then which do I plug in.

The 3 pin connector is probably to install additional fans. Connect the molex to power supply.

 

[hwc1954]

You can use either the 3-pin connector to the motherboard fan connector OR the molex to the power supply. Not both.

The molex connection will run the fans at 100% speed. Breezy, but loud.

The 3-pin connector will run the fans at 100% speed or variable speed, depending on whether or not your motherboard has variable voltage speed control on the 3-pin headers. That may be an option you can set in the BIOS.

Depending on the fans' wattage, you can run 2 fans (or more) from each motherboard 3-pin header using y-cable splitters. There's no practical limit to the number of fans you could run from a power supply molex.