With the trust of Sony, you can use this HD-B1 External Slim Hard Disk to expand your PC's internal memory. Its huge 1 TB storage space provides you with a resourceful reservoir to accumulate your data for rapid anytime access. The HD-B1 External Slim Hard Disk gives you the requisite flexibility and portability to move around with your data for swift access from your multiple devices. You also acquire a secure back-up solution for an easy retrieval to prevent permanent data-loss.