GR3660-TB2 supports Thunderbolt 2.0 (TB2) interface for an extreme high data transfer speed. And both of the two TB2 ports are equipped with up to 20Gb/s data transfer rate which is 4 times faster than USB3.0 and even 3+ times than SATA III interfaces. You could definitely use it to play your 4Khigh-resolution films with no any lagging hassle. TB2 interface not only brings you this high data transfer rate advantage, it also let you chain maximum up to another 6 more GR3660-TB2 products (or other compatible storage products). While using PhotoShop or Lightroom Photo Editing software, you, as a professional photographer or the hobbyist, could use your GR3660-TB2 with 2.5" SSDs to help managing your huge photo library. Your RAID 1 data protection and fast data transfer rate could definitely help could definitely help you to keep your RAW files and their finished photos. Model No GR3660-TB2 Interfaces Thunderbolt 2 Port x 2 ( up to 20 Gbps ) Compatible Drive 2 x 3.5" /2.5" SATA HDD/SSD ( up to 6 Gbps ) / Support large volume up to 10TB Storage Mode 2 x Independent ( JBOD ) / RAID 0 / RAID 1 Cooling System 4 cm Low noise fan Operating System Windows, Linux, Mac Electrical and Operating Requirements * Line voltage: 100-240V AC * Frequency: 50Hz to 60Hz, single phase * Operating temperature: 32° to 104° F (0° to 40° C) * Storage temperature: -4° to 113° F (-20° to 45° C) * Relative humidity: 5% to 95% noncondensing Size and Weight Height: 122 mm Width: 63 mm Depth: 244 mm Weight: 1.2 kg Product Code EAN�4713227440042 UPC�884826504221 Carton 8 pcs per carton Package Accessories * GR3660-TB2 Product Unit x1(Removable Tray x2) * Thunderbolt Cable x 1 * Power Cord x1 * CD x1 * Foot Pad x4 * AC/DC Adapter x1 * Quick Installation Guide x1