8.Attach each of the four black screws with rubber head assembly into the screw holes of the HDD as shown.
black screw 
rubber head
9.Position the Serial ATA HDD on top of the drive bay to an orientation where the HDD’s SATA connectors are aligned to the SATA connector in the VivoPC drive bay.
10.Match the rubber heads with the four screw slots on the drive bay.
11.Carefully, place the Serial ATA HDD into the drive bay, then slide the drive towards the SATA connector.
SATA connector
rubber head
screw slot
36VivoPC Barebone