StarTech Extra 3.5in Hot Swap Hard Drive Tray for SATA and SAS Backplanes SATATRAYBK Allows for spare hard drives to be prepared for use beforehand Compatibility with different models of SATA/SAS backplanes and mobile racks for convenience Backed by a StarTech. com 2-year warranty and free lifetime technical support Durable and lightweight aluminum construction Latch locking mechanism Can accommodate a 3. 5in SATA or SAS hard drive