Apple developer documentation - https://developer.apple.com/documentation/apple_silicon/implementing_drivers_system_extensions_and_kexts#3616855 says: If your hardware communicates entirely using standards-based protocols, you can ship a driver that matches your hardware to one of the built-in system drivers. Is this possible to do if macOS itself has the driver implemented as a DEXT? Particularly, I'm interested in providing support for an FTDI device with a custom product ID in my application. I've understood that macOS implements the FTDI driver as a DEXT (/System/Library/DriverExtensions/com.apple.DriverKit-AppleUSBFTDI.dext). In Catalina, it's possible to work around this problem by instructing the users to install FTDI's custom KEXT driver, but that doesn't work anymore in Big Sur because the KEXT is blocked there.