WD My Passport Essential SE 2011 model has been improved interface to USB 3.0 for faster transfer rate but it's still use with USB 2.0 device. It has capacity of 1TB and 750GB with 4 colors: black, silver, blue and red.
My Passport Essential SE is compact size external hard drive and small enough for fits in your pocket. Its case has glossy finish with rounded edges and 0.7 inch thick. Compatibility with 2 interface is perfect for users who are using USB 2.0 device and plan to upgrade to USB 3.0 in the future.
About USB 3.0 port, transfer rate is up to 3 times faster when transferring large amounts of data such as movies or photo gallery. However it will come down if you use more complex operations, and it's not different speed on USE 2.0 for working with small files.