Now with USB 3.0 SuperSpeed for interface speed of up to 5 Gbits/s - that is 10x faster than USB 2.0. Buslink CipherShield Dual Key USB 3.0 4TB 256-bit Encrypted External Hard Drive safeguards and protects classified information when they are too important to be left in the hand of one individual. To gain access to the drive, authentication will be based on two unique Cipher Keys. It requires both keys to be plugged in all the time while working with the drive. It is like getting a safe deposit box that takes two keys to open. CipherShield USB 3.0 Dual Key Encrypted Drive is suitable for group setting where more than one individual are working on highly confidential projects. i.e. blueprints for company's next new products, top secret programs, highly confidential legal cases, sensitive customer records and financial information. It ensures high level of data integrity and security, thus supporting organization compliance efforts with federal regulations such as HIPAA (Health Insurance Portability and Accountability Act), or Sarbanes-Oxley Act. USB 3.0 interface is backward compatible with USB 2.0.