[* black] Once the drive is removed and the drive clip is unscrewed, remove the rubber bumpers from the drive. To do this, pull them off of the drive as shown. Transfer these to the new hard drive you are installing in the system.
[* icon_note] These bumpers are held in with double sided tape. The tape will usually withstand 1-3 uses. After this you will need to either replace the tape on the drive bumpers or buy new ones.