QNAP Adapter QDA-SA-4PCS (6Gb/s SATA in 3.5 "SAS drive)

QDA-SA SAS - SATA 6Gb/s Adapter (for Enterprise ZFS NAS) Link to manufacturer website: Function The QDA-SA Adapter is designed for QNAP Enterprise ZFS NAS and allows the use of 6Gb/s SATA disk drives in 3.5 ”SAS drives - giving you the ability to expand storage capacity with cost-effective SATA drives. SAS has two redundancy ports, eliminating single point of failure and providing greater reliability and performance. When SATA is installed with QDA-SA on dual-controller Enterprise ZFS NAS