Lacie 9000465 d2 USB3 Thunderbolt Series 5TB Interface - 1 x USB 3.0 port (UAS and USB 2.0 compatible) / 1 x Thunderbolt port Interface Transfer Rate - Thunderbolt - 10 GB/s / USB 3.0 - 5 GB/s / USB 2.0 - 480Mb/s maximum (actual rates may vary according to your computer) Average Transfer Rate - Thunderbolt - Up to 180MB/s / USB 3.0 - Up to 180MB/s / USB 2.0 - Up to 35MB/s Rotational Speed (rpm) - 7200rpm Cache - 64MB or greater