The WD My Passport Essential Ultra-Portable Hard Drive is a compact and convenient storage solution by Western Digital. With a storage capacity of 640GB, this portable external HDD from the My Passport product line offers ample space for storing a large amount of data. Perfect for backing up and organizing files, this drive is ideal for users looking for a reliable storage option that is easy to transport and use with various devices. Its automatic backup feature ensures that important data is securely saved, making it a practical choice for those needing extra storage space on the go.