Just bought a T5 SSD 500Go today and it appears on my desk with USB-3 + Hub on USB-C but not with USB-C directly (???), and the software doesn't work with my version of Catalina 10.15.2 (mac mini 2018).
i downloaded the version 1.6.6 of Samsung portable ssd, try to go in System Preferences but nothing works.
Hope Samsung will find a solution...
I am new to MAC and had to change the permissions on mine before it would see the app.
To change application permissions on a mac, click the Apple icon → Click "System Preferences" → Click "Security & Privacy" → Click "Privacy" → Click on a service → Click the check box to add or remove an app's permission to the selected service.