iStarUSA Group 5.25" to 4 X 2.5 SATA HDD/SSD (BPX-124-SA) Supports 4 x 2.5" Sata HDDs/SSDs in one 5.25" Drive bay Supports HDD/SSD thickness from 7 mm to 12.5 mm Aluminum cover for maximum durability and excellent heat dissipation Compact multi-bay design to maximize the space in your workstation Integrated high-speed cooling fan can effectively reduce HDD/SSD temperature