Palm Raid 512GB SSD (256GB SSD x 2 : Thunderbolt RAID) w/Transfers Speed of 714Mb/s Thunderbolt for lighting fast transfer speeds of up to 713MB/s Two mSATA SSDs that can be combined in Software RAID Tethered cable with magnet and cable holder Heatsink for passive cooling and Durable, compact and portable Fanless and noiseless and Bus powered