Hello Gloup_Gloup,
Yes, my device works via USB 2.0 in the back. Yes, USB 3.0 is enabled in the BIOS. Although I am not trying to obtain USB 3.0 speeds, I would like to use the front two USB ports on my Corsair 500R for ALL USB devices, USB 2.0 and 3.0. I get BSOD's when I just plug in the Turtle Beach headset in the USB 3.0 port. If I'm lucky, it will not crash; however when I launch a game, such as TF2, I get a BSOD. I have attached the crash report.