Anyone has USB 2.0 problem with the UEFI BIOS? Mine stop working after update to the new bios. My board is GA-Z68X-UD3H. The 2 USB ports in the back are not working anymore despite there are another 2 but working fine. I looked at the BIOS and notice there are several option about EHCI and AHCI, along with USB 2.0 Controller. I enabled all of them, but they still don't work anymore. USB 2.0 at front still working as well as USB 3.0. Also, I noticed that there isn't a AHCI checkup after the POST screen. For previous BIOS, there was an checkup to load AHCI devices, but now it is gone. I don't even know if AHCI is working or not.