So I have a Razer Katana PSU 850W and don't know how to plug in the RGB link properly. It's 4 pin on one side and the other side is split into a 3 pin and 4 pin. It currently is plugged in with the 4 pin into the PSU and the other 4 pin to the motherboard while the 3 pin isn’t plugged in. However the Katana PSU doesn’t show up on Synapse 3. What am I doing wrong?