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How to set USB device to read-only 


1. Run USB Blocker and enter password into the program. Your computer IP address can be displayed on the main interface.  You click "Connect Password" set password.

2. Then click "Select All" button,your computer IP address will be selected.


3. After you click "Connect" button,your USB current status will be displayed. 

4. After you click "Read" button,your USB current status will be changed to Read-only.

5. Please replug your USB device,then you can copy a file to USB device to test.