Onnto DataTale 3.5” SATA HDD 2-bay RAID System User Manual page 11

(Fasten the Handles on HDDS)
3. Place the HDD with the metal cover side facing up and ensure that the
interface connectors are oriented toward your left side.
Connectors
4. Position the handle to the HDD end, which is facing away from the interface
connectors, and align it with the screw hole openings.
Connectors