I am getting very poor performance on the USB 3.0 ports of my ASUS P8Z7-V LK motherboard in Windows 7 64-bit. Write speed is averaging 5mb/s on a USB 3.0 key (Kingston Datatraveler III 16GB). The same key on another computer hits over 30mb/s so it isn't the key. The write speed is the same using a USB 2.0 key, and the USB 3.0 key is writing at the same rate on a USB 2.0 port. I flashed the BIOS to the latest version (9.04) and loaded the latest drivers from ASUS's website for both the Asmedia and Intel controllers. I turned off my AV, no change. I changed the drive settings to Better Performance, still slow. Read speed seems to be good - 55mb/s on the Kingston, 20mb/s on the USB 2.0 key in the USB 3.0 ports. Any suggestions?