BUSlink CipherShield Encrypted external hard drive provides the ultimate security for companies to store and access confidential data securely across organizational boundaries. USB 3.0 and eSATA interfaces allow user to transfer gigabytes of data quickly. BUSlink CipherShield Encrypted external hard drive provides first class hardware encryption to ensure integrity and confidentiality of critical data. CipherShield design features a chip embedded in the access key which matches the AES encryption module on the controller board. The drive will automatically lock down its content once the key is unplugged, or power is shut off. And without the access key, data will not be seen or accessed in the event of theft or loss of the external drive.