The 256GB Neutrino Thunderbolt SSD from Akitio is an external drive that allows you to store and rapidly access all your music, video, photo and data files. The type of storage device used inside the Neutrino Thunderbolt is a SSD which offers a 256GB storage capacity and a read speed of up to 520 MB/s. It connects to either Mac or Windows systems through its Thunderbolt port which offers transfer speeds up to 10 Gbps. The drive is powered via its Thunderbolt connection. The Neutrino runs quietly without a fan and utilizes a passive heat sink to cool the drive. A Thunderbolt cable is also included with the drive.