The information is right there, ready. The RGB header on the motherboard is +12V G R B.
[picture from http://www.pcper.com/reviews/Motherboards/ASUS-Rampage-V-Edition-10-Motherboard-Review/Features-and-Motherboard-Layout]
Just make a cable to match your LED strips. The CableMod RGB LEDs I got comes with an adapter cable that swaps a couple of wires to make it "AURA" compatible.