If the laptop uses a Titan Ridge Thunderbolt 3 controller, it's not backwards-compatible with the Thunderbolt Display (which is a Thunderbolt 1 device).
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Apple Thunderbolt Display on a PC?
- Thread starter Rob.G
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How would i verify that? Its a dell latitude 7400…i see “intel” thunderbolt when i open the tb app
What does Device Manager say? (Check the PCI ID of the Thunderbolt controller to be sure.)
There is a setting in the bios though that i think i need to enable. Right now bios says TB enabled and TB boot support. But i think we also need to enable TB (and PCIe behind TBt) prebot. I just could not test it out yet since its a work laptop and is managed by IT dept
A PCI ID of 8086:15D9 suggests Alpine Ridge which would be good since it does support Thunderbolt 1 and 2 devices.
So it could be the BIOS setting then??...what else do i need to check? i have updated the drivers and app still nothing. I have also updated the BIOS to the latest on the dell site.
I have a titan ridge card with working thunderbolt display. I have to boot into hackintosh open core install first before booting into windows 10 via bios change to get it to work and I don't know why it does that way either. None of the audio or periphireals work though. Hoping I can get audio working with some help here.
I came here to add, thunderbolt 4 does NOT work with apple thunderbolt 27” displays. I tried everything!! It worked with my pc with tb3. My work updated me to a new pc with only tb4. I even tried Tb4 to Tb3 dock to tb3>tb2 adapter. Tb4 is in no way compatible with the displays. I may just sell the two I have. Such a bummer as my old lenovo p51 worked with both my tb displays daisy chained together flawlessly with the adapter. I just wish there was an hdmi out to tb2 in adapter!!
Even if there was such a thing, it would only enable the display itself, but not brightness control or the built-in ports.
I would take it at this point. The ports are blocked by our security policy anyways.