Choose USB Lock when you need to control USB ports, whitelist trusted devices, and reduce removable-media data leakage. Choose USB Encryption when you need password-protected encryption on the removable drive itself.
1. You want to block unknown USB storage devices.
2. You need whitelist rules for approved drives.
3. You want policy control rather than encrypted storage.
You want a password-protected secure area on the removable drive itself so confidential files stay protected if the device is borrowed, shared, or lost.