I have a Katana Psu is 1200w. I tried to connect its ARGB to the ASRock Razer co-branded Z690 mobo, but it quickly became loose, causing the cable to fall off. I also wanted to connect it to the Razer Chroma Controller, but it still did not appear in Synapse 4. The worst part is it doesn't even show up in the controller. It's just like a standard PSU.
The PSU is in one of the two, but one has not been identified, and I'm not sure which. The other is empty.