LaCie 1big Dock 4TB Thunderbolt 3 External HDD Key Features 4TB External HDD Dock 7200 rpm Rotation Speed Compatible with Windows and Mac Thunderbolt 3 & USB 3.0 Interface 5-Year Limited Warranty Overview Todays Laptops are more powerful and portable than ever but, their slimmer build has lowered the amount of space for ports and memory card slots – which means you need more dongles. The LaCie 1big Dock is here to help you back up and safely store footage whilst being able to charge your phone and USB devices, offload files, connect 4K pro monitors and power your laptop. All through a single cable leading from you drive to your laptop with incredible Thunderbolt 3 performance. Box Contents LaCie 1big HDD Dock Thunderbolt 3 Cable (USB 3.1 capable) Seagate IronWolf Pro HDD External Power Supply Quick Start Guide Specifications Disk Type HDD Dock External? Yes Capacity 4TB Rotation Speed 7200 rpm Transfer Rate up to 280MB/s Interface USB 3.1, Thunderbolt 3 Compatibility Windows, Mac Dimensions 217 x 118 x 56 mm