- Go to Applications -> Utilities -> System Profiler
- Click "Serial-ATA" from the sidebar
- Click on your SSD from the main window pane
- Look for the "TRIM Support" line, if it says "Yes" then it's activated.
- Go to Applications -> Utilities -> System Profiler
- Click "Serial-ATA" from the sidebar
- Click on your SSD from the main window pane
- Look for the "TRIM Support" line, if it says "Yes" then it's activated.