Take your new hard drive and insert it into the hard drive bracket in the same position as the original hard drive.

When re-attaching, ensure that the hard drive is oriented correctly inside of the hard drive bracket.

The hard drive should be face up such that the hard drive connectors can be seen.

The screw holders on the open ends of the hard drive bracket should be on the top.

The screw holders on the opposite side of the hard drive bracket should be on the bottom.