The only problem I am having with this MOBO is USB 3.0. If Plug a pen drive or external hd 2.0 on USB 3.0, it works very well, but when I plug my toshiba 3.0 external drive and try to copy a large file it freezes in the process. If it is a small file, no problem. I did every thing I know, like update the USB 3.0 drivers, firmware,BIOS, reinstalled windows 7 64bit. I had a Gigabyte GA-X58A-UD3R and I never had such a problem with the same toshiba 3.0 usb external drive. Can someone help on this.