Same problem here. All USB ports works for USB2 devices, or when using USB3 devices with USB2 cable, but the USB3 devices are not working (Ex: an HD enclosure USB3 will not mount).
One error I did was initially, my Multibeast install did not included checking the box of the "Increase Max Port Limit 100 Series". So I did install it on top, without success. I have also tried a bunch of things documented in this thread without success. I probably think the answer is somewhere buried in this 27 pages this thread has become but can you please help me?
Thank you.
I've just assembled an i7 6700, GA-H170N-Wifi,
EVGA 1050 GTX! (running on Sierra 10.12.4 with the newly released Pascal support, drivers worked like a charm after
a few minor tweaks).
Got audio thanks to the Grand Master Toleda and his
guide.
No sleep issues at all. SMBIOS 17.1
Almost everything's rolling except for the USB behavior: I have no power output to the USB 3.0 devices. The ports work just fine with 2.0 devices, just no 3.0 support.
The answer seems to be
here, but it gets a little overwhelming to me, got to find the right time to get into it.
Has anyone came with another solution?
Thanks everyone for the great work, very helpful thread!
EDIT: With the EFI partition mounted just applied Multibeast's
Increase max port limit under USB and that did it! Fully functional Sierra 10.12.4 on a GA-H170N-Wifi! Cheers to everyone!
EDIT 2: Decided to go with a fresh install after I experienced some problems. Followed
ammulder's guide to El Capitan almost step by step and went absolutely fine, except for the SMBIOS (changed 3.1 to 14.2, Sierra wouldn't boot otherwise). Only problem is no audio via HDMI, even copying the appropriate SSDT to EFI/CLOVER/ACPI/patched/... but I've been worse