Western Digital has introduced its new My Passport Essential portable hard drive, My Passport Essential SE portable hard drive, and My Book Essential external hard drive. All three drive families come in a variety of capacities and offer USB 3.0 5gb/s connectivity. My Book Essential is available in 1TB, 2TB and 3TB capacities, while My Passport Essential SE portable hard drives are available in 750GB and 1TB capacities. My Passport Essential is available in a 500GB capacity only.