Western Digital WD Elements Desktop external hard drive 4000 GB Black ( WDBWLG0040HBK-EESN )

WD Elements Desktop storage with USB 3.0 offers reliable, high-capacity, add-on storage, ultra-fast data transfer rates and universal connectivity with USB 3.0 and USB 2.0 devices. The sleek design features up to 3TB capacity plus WD quality and reliability. It includes a free trial of WD SmartWare Pro back-up software for local and cloud back-up. General - Device Type: Hard drive - external ( desktop ) - Capacity: 4TB - Interface: USB 3.0 - Features: NTFS formatted - Width: 48 mm - Depth: 135 mm - Height: 165.8 mm - Weight: 950 g Power - Power Source: Included AC adapter - Power Device: Power adapter - Voltage Required: AC 120/230 V ( 50/60 Hz ) Software & System Requirements - Software Included: WD SmartWare Pro (30 days trial) - OS Required: Apple MacOS X, Microsoft Windows Vista / XP / 7 / 8 Miscellaneous - Cables Included: 1 x USB cable - external - Compatible with Windows 7: "Compatible with Windows 7" software and devices carry Microsoft's assurance that these products have pass