Asus Z97-A Thunderbolt Big Sur

Hi All,

I upgraded my Z97-A with my Thunderbolt EXII from 10.11 (Clover) to Big Sur and changed the boot loader over to OpenCore 0.7.3 in the process.

However, my Thunderbolt 2 stopped working. It was working under 10.11 but on a cold boot only with no hot swapping. Now, if the device is connected at boot, it is recognized (see attached pics), but does not work (used Apple TB to Gigabit Ethernet Adapter for testing).

I know this was a Mobo/combo that TonyMac had directly at one point.

Any tips/configs to share? Everything else works.

I changed the Thunderbolt BIOS settings to "No Security" and set my cache size to 128 (default 32), but no difference.