Help powering the 3 fans in my pc case?

hello my pc case is a Corsair Obsidion 650D which has 3 fans already installed the fans are all 3 pin connectors so would i need something like this http://www.amazon.co.uk/Evercool-EC-DF003-Molex-cable-fans/dp/B009JCGIF6/ref=sr_1_8?ie=UTF8&qid=1367170213&sr=8-8&keywords=4+pin+molex+to+3+pin+fan my motherboard... show more hello my pc case is a Corsair Obsidion 650D which has 3 fans already installed the fans are all 3 pin connectors so would i need something like this http://www.amazon.co.uk/Evercool-EC-DF003-Molex-cable-fans/dp/B009JCGIF6/ref=sr_1_8?ie=UTF8&qid=1367170213&sr=8-8&keywords=4+pin+molex+to+3+pin+fan

my motherboard is an asrock z77 extreme 4
and my power supply is a corsair GS700
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