Industrial design iStarUSA T-G525-SS hotswap hard drive cage. With unique screwless HDD mounting patented design, high performance SAS/SATA 6.0Gb/s interface, and easy swap tray design, T-G525-SS is tough in strength but flexible in functionality. By popular demand, the LED display light features blue light to show hard drive power and red light for HDD accessing. Heat dissipation is enhanced by 30mm fan. And the metal security key lock prevents unauthorized access to your important hard drives.