Samsung S2 320 GB USB 2.0 Portable External Hard Drive HXMU032DA/G42 (Wine Red) Samsung auto backup: Files are automaitically backed up on the S-Series either in real-time or as scheduled Samsung SecretZone: SecretZone is a drive function that provides encryption of personal files and folders for data security. You can keep your most important content private in SecretZone. Safety Key: You can protect your personal content simply by setting a password as part of Samsung's auto backup function. Your security worries are over. Capacity Gauge: The feature allows you to see at a glance how much space is available, used or designated as backup storage in the Windowstaskbar notification area. Power-saving mode: This function saves power by automatically going into standby after five minutes of inactivity.