Power of Thunderbolt, Felxibility of USB – Thunderbolt I/O technology provides performance that’s up to 5x faster than the previous-generation Drobos. This allows you to move large amounts of data in a fraction of the time it used to take. Drobo 5D is equipped with dual Thunderbolt ports for daisy chaining. With six Drobo 5D arrays in a chain, you can have up to 96 TB of usable capacity. Drobo is the only storage array that offers Thunderbolt AND USB 3.0. This latest generation of USB also offers high-performance connectivity and is backward compatibility with any computer running compatible versions of Mac OS X or Windows.