Western Digital Elements Desktop 4TB External HDD Key Features 4TB External HDD 5400 rpm Rotation Speed Compatible with Windows USB 3.0 Interface 2-Year Limited Warranty Overview WD Elements desktop storage with USB 3.0 offers reliable, high-capacity, add-on storage, and universal connectivity with USB 3.0 and USB 2.0 devices. The simple and compact design features 4TB capacity plus WD quality and reliability. Box Contents WD Elements HDD USB Cable AC Adapter Quick Install Guide Specifications Disk Type HDD External? Yes Capacity 4TB Rotation Speed 5400 rpm Transfer Rate up to 150MB/s Interface USB 3.0 Compatibility Windows Dimensions 166 x 135 x 48 mm