Apple’s stricter driver signing requirements mean the must be notarized. If the manufacturer supplied a .pkg installer:
The software components associated with the XH-39.0 are generally robust and compatible with a wide range of legacy and modern operating systems: xh-39.0 driver
Under: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\XH39\Parameters Create a DWORD MaxBaudRate and set to decimal 3000000 . Use at your own risk. Apple’s stricter driver signing requirements mean the must