Designed to fit inside the space of a standard 5.25" drive bay, the new Addonics 2.5" Disk Array 4SA is a unique drive cage solution that can accommodate up to 4 2.5" SAS or SATA hard drives . Thus the 2.5" Disk Array 4SA can be easily deployed in many computing equipment and as many as 16 2.5" SATA or SAS hard drive or a mix of the two can be installed into the Addonics Storage Tower using 4 of this Disk Array unit.