I'm having difficulty with the Etron USB 3.0 host controller on my Windows 8 Pro x64 system.
My 3 TB Lacie Minimus external drive is recognized by the host controller, but only intermittently. Recently, it was stable and accessible for nearly six days, but after a reboot for normal Windows Updates, the drive was not found.
I have performed a clean reinstall of the most recent drivers for the Etron EJ168 controller, which supports two USB 3.0 ports on my Gigabyte GA-970A-D3 motherboard, but I can still only use the external drive on the legacy (2.0) ports.
The motherboard BIOS has been updated to F11, the most recent stable release.