Sata Power cable

Okay so I can't seem to find sata power cables, so I am wondering if I have to have them in order for my computer to function properly.

http://pcpartpicker.com/p/1dwTM

Thats my build if it helps and/or if one of my products came with a power cable tell me which one. I might have overlooked one.

The power supply will have Sata power connectors on it. 

Thank you Billgatez