i got the 3 pack of the SP120 with the lighting node core and i thought it would power them aswell as the video they use for the setup says it combines the lighting node pro and the RGB fan hub. my RGB works but no power and no extra headers on motherboard. do i need a corsair fan hub like the commander pro (which i dont want cause all i need is power and adding that will mean i spent over £100 on fans.) or can i get a cheaper one somewhere?