Hard disk connects via WiFi for easy downloading. Very large capacity, 6 terabytes. Supports Mac and Windows. Honestly, the reason for selling is my lack of technical knowledge; I don't know how to use it. It's new and I haven't used it at all. Purchase price was 780, and the selling price is negotiable. Location: Riyadh Al-Olaya. Delivery representative available. ( Phone number appears when clicking the contact button )