Follow these steps to remove the mounting frames:
1.On your hard disk drive, there may be a plastic guiderail and metal grounding plate attached to one of the mounting frames. If so, remove the screws securing them to the mounting frame, as shown below, and remove the guiderail and grounding plate.
metal grounding plate
2.Then remove the two screws securing each mounting frame to the drive and remove the frames, as shown below.
Installing and Removing Drives 3 - 7