use the usbport.kext in the Efi of https://forum.amd-osx.com/index.php?threads/catalina-10-15-6-gigabyte-b550-aorus-pro-ryzen-7-3700x-rx-5700-xt-32-gb-3200-cl16-thunderbolt-3-via-aic-bluetooth-usb-bt400.757/ , then all USB port is functional . I guess the usb controller for b550 and b550i is the...
Did you do the usb mapping? I basic using EFI of https://forum.amd-osx.com/index.php?threads/catalina-10-15-6-gigabyte-b550-aorus-pro-ryzen-7-3700x-rx-5700-xt-32-gb-3200-cl16-thunderbolt-3-via-aic-bluetooth-usb-bt400.757/ there is only one problem, when use mouse/keyboard on xchi0, then can not...
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