sammmm

Thanks again, this did the trick. It is unfortunate that simply connecting the Core's USB to the Commander Pro does not work (apparently an AMD problem as you mentioned) but having both directly going into the motherboard works now.

I think you're right c-attack, I could do this all without CoPro. I will consider that but I do want to try one thing first. I don't have my machine in front of me right now, but off memory I was thinking of trying this in my current situation: Taking that free USB2.0 coming out of the Commander Core, and extending that so it can reach the motherboard USB2.0 port, without doing anything to the CommanderPro, which as you said does not work as a passthrough for the Commander Core if it is already itself plugged into a motherboard USB2.0. So basically I'd have the CoPro feeding a USB into the motherboard, and then the CoCore would also feed its own USB directly into the motherboard. I do have the extra motherboard USB2.0 available, it's just that with the pitifully short length of the USB line coming out of the CoCore, it doesn't quite reach far enough from where I have the CoCore to the motherboard. Is that potentially workable, or am I way off still? Another idea might be to feed the loose CoCore USB into a SATA-powered USB hub like you suggested, which then would feed the hub's USB into the motherboard. Not sure what the effective difference there is besides gaining even more free USB ports with the hub besides the one that would be used by CoCore, which is a bonus.

I have the following build: CPU: AMD RYZEN 9 5950X 3.40 GHz (4.90 GHz Max Boost), 16-Core 32-Thread GPU: EVGA GeForce RTX 3080 Ti FTW3 Ultra Gaming 12GB Motherboard: Gigabyte X570 AORUS Master ATX Motherboard (WIFI) RAM: Corsair Vengeance RGB 32GB DDR4 3600MHz (4x8GB) SSD: 2TB Intel 660P M.2 NVMe SSD CPU Cooler: CORSAIR Hydro Series H115i Elite Capellix 280MM Liquid Cooling PSU: CORSAIR RM850x 80 Plus Gold PSU Case: CORSAIR Obsidian Series 500D RGB SE Mid Tower Case, LL120 Fans, Commander PRO My problem right now is with the H115i Liquid Cooling pump RGB. It's stuck in a default rainbow state and I want to control it to match it with my fan lighting scheme, which is successfully detected and controllable by Commander Pro in iCue. The confusion I see seems to involve Commander Pro + Commander Core. It seems I have the pump RGB powered into the Core unit. The Core has a loose USB coming out of the other end, which from my reading, should be put into the motherboard OR Commander Pro. It cannot reach the motherboard's internal USB2.0 ports. So I had it in one of the Commander Pro's USB ports. But whether it is plugged into the CoPro USB port or left completely disconnected, it does not register at all in iCue, and thus cannot be controlled. I cannot control the pump, nor the LEDs on it. The pump itself is working, and the LEDs do work in their default rainbow state. But I would like to be able to do what is advertised, and change the LED theme. It would be nice to have some control over the pump itself in iCue. I have poured over many troubleshooting threads and the next thing I will try is taking that loose CoCore USB which does not reach the motherboard, and does nothing when plugged into CoPro, and buying a USB extension cable for it. The options are slim here. Best I can find is a 9-pin male-to-female USB2.0 for internal motherboard connection. Not sure if this will work at all, but have no other ideas on what to do. iCue is updated fully and works well with the 6-fan RGB control and speed control. It just lacks any communication whatsoever with the pump itself. Any obvious ideas that I'm missing? Thank you