asr-9xx_usbconsole_drivers.zip (often referred to as asr9xxusbconsoledrivers.zip
Apple has removed built-in USB-to-serial drivers in recent macOS versions. The asr9xxusbconsoledriverszip upd includes a signed kext (kernel extension) or a system extension. asr9xxusbconsoledriverszip upd
If you want, I can: