Syba 10GB not working after update from Catalina to Big Sur OpenCore 0.6.6

Aorus Pro z390 mobo. i9-9900k. RX Vega 64. 64GB 3200mhz ram.

I have this Syba 10 gigabit ethernet card and it was working fine in macOS Catalina, with standard IntelMausiEthernet.kext along with the built-in ethernet. Then I upgraded from macOS Catalina to Big Sur and OpenCore from 0.6.3 to 0.6.6. The built-in ethernet is working fine but not the 10 GB ethernet card. Do I now need a separate kext for that card?

I checked with Kext Updater and have the latest kexts.

My kext folder contains:

AppleALC.kextAppleMCEReporterDisabler.kextIntelMausiEthernet.kextLilu.kextSMCProcessor.kextSMCSuperIO.kextUSBPorts.kextVirtualSMC.kextWhateverGreen.kext