moonelf Posted March 21, 2017 Share Posted March 21, 2017 Hello, Followed instructions from here although my build is slightly different http://www.insanelymac.com/forum/topic/315489-gigabyte-x79-up4-macos-sierra-success/ Most things seem to work but I am having a couple of issues - USB 3 devices are detected as USB 2 under System Report - External USB 3 Hard Drives appear as Internal Hard Drives in System Report and Desktop Icons Everything else seems to work. I hope someone can advise me on how to fix these issues. It seems that USB related problems is very common for Sierra and El Capitan with X79 systems. I found and tried recommendations to apply a "Increase Max Port Limit" fix. This did not fix the problems and seemed to make USB 3 more flakey. I have now reverted to the previous state before applying this "fix". Any help getting this sorted would be much appreciated! Gigabyte GA X79 UD5 I7 3930K 6 Core Gigabyte GTX 770 (patched with AGDPFix) Corsair Vengeance DDR3 32GB Samsung 840 Evo SSD 750GB MacOS Sierra 10.10.3 Link to comment Share on other sites More sharing options...
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