The write protection switch on the back of the case is a new feature that prevents accidental data deletion. It works similarly to the write protection switch on an SD card. Another significant advantage of such write protection is that the contents on the secured drives can no longer be manipulated by software vulnerabilities. The user has complete control over when specific data can be altered by the host computer. With the IB-256WP, you no longer have to worry about the security of your protected data.