If you have an older Apollo Twin (Thunderbolt 1/2) and a newer Mac (USB-C/Thunderbolt 3 or 4), you must use the official Apple Thunderbolt 3 to Thunderbolt 2 Adapter.
Universal Audio does not provide a standalone "driver" file. Instead, all drivers, firmware, and the are managed through the official Universal Audio Downloads page . apollo twin driver download mac
Before installing, ensure your hardware chain is compatible. If you have an older Apollo Twin (Thunderbolt