Two USB 2.0 Headers but when both connected mobo won’t boot

cosmogenesis

cosmogenesis

cosmogenesis

Soldato
Joined
15 Mar 2007
Posts
3,592
I have an AIO into one and it boots and then I connect a Corsair hub with 3 fans to the other usb header and it then won’t POST. Too much power draw ?

Do I need to use a usb header extender?
 
Isn't the fan hub powered off a SATA power connector?

Does it boot with just the hub connected and fans removed?

Check if BIOS if there is a setting for that specific USB port to be enabled after POST. The computer may be trying to detect the connected device and failing.
 
HI, yes the machine is fine with just the AIO plugged in. Yes the hub is SATA powered and yes the lights do light up.

I have not tested the fans on their own as I have 3 Antec fans plugged into the ARGB_port via its own hub (ARGB fans)
 
Wondering if anyone can help. I have a three USB 2.0 headers on this motherboard but I dont really understand what you can use them for.

I have an AIO pump that needs one and I was going to the one of the other ones for more standard RGB fans. I connected then up to the next USB 2.0 header via a corsair controller and the light came on the fans and they also span up ok but the machine would not boot. The motherboard light would not move from amber. I had to clear the CMOS as the RAM was set to its EXPO setting and now it wont work on its EXPO setting at all.

I have taken out the corsair hub from the USB 2.o header leaving the AIO plugged in and the machine works. the manual here says about USB 2.0 headers but I dont really know what it is telling me.


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I can only presume that plugging in the Corsair hub into the other USB 2.0 header caused some kind of power issue?
 
Which of those USB headers are you plugging what into? Looking at that manual diagram, it looks like there's a total of 12 USB connections on that motherboard, and there are 6 (non direct consecutive) USB connections via those headers. It might be that if you have other USB devices connected to the PC (say something via the IO on the back of your motherboard) then it might be devices (ones at back and the one of the headers) are on the same channel and they are conflicting with each other as they are both trying to talk at the same time. What other USB devices do you have connected? (Not internally, but externally)
 
Headset, mouse and keyboard.

I am referring to the USB 2.0 headers which appears to have 3 channels. From what you are saying though usb of whatever kind use the same channels ?

Cheers for replying as the manual just said about using an external USB powered hub
 
this is a silly q.. but does the system power on with just the Corsair hub connected, without the AIO connected.. temps will be fine if accessing the BIOS.
 
I have not tried that but the manual list 3 USB 2.0 ports and I was thinking well why provide them if you cant use them but as soon as I plugged int 3 more fans via a Corsair hub (powered by a SATA connector) and using a USB 2.0 connector the RAM set to EXPO then meant the machine would not boot.

The system now restarts after I cleared the BIOS. Now I am just using the machine with the RAM at 4800 (standard setting) as EXPO now wont work at all and I have unplugged the corsair hub completely and just left the AIO plugged in.

Painful experience really.
 
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