4TB, silent design, 4K-compatible USB external hard drive. - Brand: BUFFALO - Model Name: HD-EDU4U3-BE - Capacity: 4.0TB - Connectivity: USB - Compatible Devices: PC, TV - Size: Approximately 12.5 x 3.5 x 19.5 cm - Features: 4K compatible, silent design, heat dissipation design Thank you for viewing. Although not completely unused, it has only been connected and powered on once after opening. Comes with a warranty. I am selling it because my TV is old and not compatible with 4.0TB. If purchased, it will be shipped on Sunday after confirmation of payment. Thank you.