LaCie 3TB d2 USB3.0 Thunderbolt 2 Series Dual-Interface Hard Disk (7200rpm) w/Thunderbolt Cable 3TB LaCie d2 USB3.0 Thunderbolt 2 Series External desktop hard drive - transfer speed up to 180MB/sec Dual-interface: USB3.0 and dual Thunderbolt ports Thunderbolt cable included - Fan-free aluminium heatsink Built-in 7200rpm hard drive