I have IOGear GBU521 , Simple solution in Mojave 10.14.5 :1. Disable Intel Bluetooth(If you have) ;2.Remove BrcmFirmwareRepo.kext and BrcmPatchRAM2.kext from S/L/E and EFI/Clover/kexts/Other ;3.Use Kext Utility to reset the cache/permissions ; -- Perfect working for me .
THANK YOU David.
I just bought the IOGEAR GB521 and started to panic because it didn't work "out of the box", nothing happened.
I dreaded having to fiddle with kext and clover files etc.
But I saw your post and simply tried. I:
- Disabled internal bluetooth in the BIOS of my Intel NUC8I7BEH
- Mounted the EFI partition, and removed the two kext you mentioned.
- Downloaded Kext Utility and launched it, then rebooted.
And it worked flawlessly. I can now connect my Apple Keyboard, MX Anywhere 2S mouse and AirPods pro, thank you so much.