– This removable storage medium allows data to be written and erased as often as is required and is ideal for capacity expansion – Removable USB 2.0 storage medium – Includes SanDisk SecureAccess software (download necessary): protects your private files in an encrypted, password protected folder (128-bit AES encryption) System Requirements: – Operating system: Windows 2000/ME/XP/Vista/7/8, Linux, MacOS X ver. 10.1.2 or higher