one thing I will say instead of buying the garbage barrow rgb controller what I did was buy an alphacool 16mm light ring that comes with get this a 3 pin pwm to rgb connector. which is how I made these work. it comes with a jumper cord the alphacool ring does. granted my loop is 14mm so the 16mm ring won't fit my system and alphacool doesn't make 14mm rgb led light ring but barrow does and they both have the same connectors. alphacool did a better job and took it one step further with the bridge pwm to 3 pin rgb adapter! can't beat it so yeah don't buy the barrow garbage accept of course this thing as it's the only company who makes 14mm light ring kit!