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I'm not positive, but for me, the Thunderbolt card is at <"pci8086,1577"> according to IORegistryExplorer. I have a Gigabyte Z270X motherboard with the Alpine Ridge card in the last PCI slot. I am using it in Mac OS 10.12 successfully with an Apple Thunderbolt Display via a Thunderbolt 3-2...

Before I installed the Alpine Ridge card, the motherboard's Thunderbolt 3 was indeed working properly (on both Windows 10 and macOS 10.12.6). I could use the Thunderbolt Display and all its ports/functions from both OSes, with the caveat that its video was only from the iGPU. I was hoping that...

@map002ster Did you see the great guide from @dracon here? All three of us have the same board:

@joevt I installed the Intel chipset drivers as you advised, and it does indeed now show port numbers in Windows. Strangely, if you look at the two ports listed in the Thunderbolt software details (attached), one listed controller has a much older NVM firmware version than the other. Is the...

Thanks again for the details, and the pinout explanation of the mobo header. Yes, I'm using the Apple TB3-2 adapter. Here are the screenshots as requested from Windows 10's Device Manager and the Thunderbolt Software. In Device Manager, I don't see four 'lanes' per se; just one Thunderbolt...

Bizarre. Thanks for the info. Do you see any relevant error output in the logs upon booting into OS X directly?

Hi @carlossless — I have a similar setup to you, with a Gigabyte mobo (GA-Z270X-UD5) and an Apple Thunderbolt Display. With the Apple TB3-to-3 adapter, all the ports/features on the display (speakers, webcam, USB/Firewire/Ethernet) worked in OS X 10.12.6. However, the system had some stability...

Great! Glad to hear it's working as desired.

@joevt thank you for the detailed reply! BTW, when I said the Alpine Ridge card was "expensive" I didn't mean it literally—I just meant 'acting as a glorified active video adapter.' In fact, I got it on sale today for only $50 at Fry's Electronics (the card seems hard to find elsewhere in the...

I've indeed read that TB needs to be 'activated' in Windows, yes. Sorry, I wrote the earlier post while sleepy. You're right, the GA-Z270X-UD5 is the only model; there's no "TH" edition. I have the same board as you, the Z270X-UD5, with the built-in Thunderbolt backpanel port. TB3 works for me...

To be clear, do you have the GA-Z270X-UD5 (one Thunderbolt 3/USB-C port) or the GA-Z270X-UD5 TH (one back panel TH3/USB-C port, and one TH3 motherboard header)? I ask because I have the latter board. Thunderbolt does work, to the extent that my Apple Thunderbolt Display operates, along with its...

For me, IOThunderboltFamily.kext is in System/Library/Extensions, not Library/Extensions. I think the latter is for third-party extensions only. What's your use case? Which Thunderbolt devices are you trying to use with the card? Just a heads up that as far as I know, the "System Information"...

Hi all, I'm considering buying this Alpine Ridge add-in card. I recently built a new system using a Gigabyte Z270X-UD5 TH motherboard. This mobo has onboard Thunderbolt 3, but it can thus only use the iGPU for video output (I also have a standard 1920x1200 monitor connected to my Nvidia GTX...

BTW, for some more detail on this issue on the Mac version of the 5770 card, see this Apple Discussions thread: https://discussions.apple.com/thread/26 ... ID=2613474 "Oct 13, 2010 5:10 PM I have a new Mac Pro 5,1 that is about 6 weeks old. This computer has the standard configuration with the...

Hi Paul_benjamin, I have noticed the same issue you're talking about on my own week-old Sapphire Vapor-X HD 5770, running a fresh install of OS X 10.6.7 (GraphicsEnabler=no with MBP 10.6.7 ATI kexts, using kabyl's Chameleon boot, and a custom DSDT to load Vervet and enable HDMI audio, etc). I...