Bryan335

Has anyone had any luck with this yet? I've been scouring the internet for a week and this is the only post I've been able to find that describes exactly the same issue I'm having. I've got a very similar build to OP. Asus Prime-X570 Pro 3700x Seasonic Ultra 850 O11-Dynamic Same exact symptoms. I have 9 LL120 fans, and was using 2 Commander Pro units initially. With both connected (1 each to the on board USB headers) whenever I hear the device disconnect sound go off 1 set of fans/CP would drop RGB. USBDeview and USBLogview would both show the Commander Pro has gone offline and quickly comes back. At the same time another random device would always reset. Either the RGB headers on the motherboard including the RAM would turn off and reset or another USB attached device like my mouse or keyboard. I pulled one of the Commander Pros out and am running 3 PWM splitters for 6 fans, and 3 fans on the on the other 3 headers. I have 2 RGB hubs connected to the RGB headers on the CP, and I took one of the LN Pro from the fan kits and connected it to the now free USB header on the board for some RGB light strips. In this setup, same exact results as before except now instead of the RGB headers being reset, my ST100 headset stand resets. iCue shows it quickly disconnects and reconnects. So now I took a small USB cable, connected it to a port on the back of the IO and ran it into the case and connected the LN Pro to it. This stopped the ST100 from constantly resetting. Except the CP still disconnect and drop off. iCue would show it disappear and all the fans would drop RGB. Not the LN Pro though. I downgraded iCue to 3.18.77 per another recommendation on the Corsair subreddit and now it seems fine, except randomly I get the same disconnect sound. No RGB resets, no device reset but the sound constantly goes off. Looking in USBDeview there is no obvious device disconnected and I should note that this happens so fast I never hear the "device connected" sound, just the disconnect. However, when I pull up device manager and look at the various "USB Input Device" there is something going on. Bus reported device description - Commander PRO Last arrival date - This will always match perfectly with the last time the disconnect sound went off. Also, on either of the two CP I bought or the one I already owned the Asus Prime-X570 board will not recognize the 2 USB headers on the PRO. I've connected 3 different CP to each header and tried the LN Pro that comes with the LL120 kits and they get no power at all, they're not seen whatsoever with no BIOS setting or driver making any difference.