You can try it both ways. But it is designed to use their controller. If it doesn't work on the Asus RGB header, then it will work with their controller.
Product Name RGB LED Controller
Model Number MFY-RCSN-NNUDK-R1
Dimension 90mm x 53mm x 14mm
Material Plastic, PCB
Control Method Cooler Master Software
Input Connector SATA Power
Output Channel Voltage 12V
Output Channels 4
(Port 1, 2 for frequency control)
Lighting Mode Static , Breathing, Color Cycle, Stars, Customize , Multilayer, Turn LED off, Mirage (Frequency Control)
Included Accessories 4 x 450 mm Extension Cable
1 x 600 mm Extension Cable
Interface USB connectors (9 Pin)
Weight (g) 122
Warranty 5 Years
EAN Code 4719512060483
UPC Code 884102033148