I upgraded my MacBook Air (early 2015) to the latest macOS Monterey, v 12.0.1. Installed the Aura Pro X2, but the mac did not recognize it. Reinstalled the old SSD, no problem. (So the connectors etc on the mac must be fine. ) Installed the Aura Pro X2 in the external enclosure that came with the bundle. The enclosure powers up, but, the mac still does not see it when connected via USB port. I believe the Aura Pro X2 that was shipped to me is defective but, not sure how to get help beyond this. Wasted over $500 on this effort.