Ideal for desktops, the Western Digital WDBAAU0020HBK-NESN is an external hard drive that meets your data storage needs. This Western Digital 2 TB drive features a USB 2.0 port with a transfer rate of 480 Mbps, allowing you to transfer files quickly. The plug-and-play feature allows you to connect this Western Digital 2 TB drive to your desktop through the USB port, for additional storage. The Western Digital WDBAAU0020HBK-NESN uses its GreenPower technology for reducing power consumption. Avoiding the usage of toxic and hazardous chemicals, this external HDD is RoHS-compliant. This external HDD is compatible with Windows 7, Vista, XP and MAC OS X tiger or leopard. You can easily format the Western Digital WDBAAU0020HBK-NESN, while using MAC.