Dell Dimension C521 - Manual (Page 79)

Removing and Installing Parts
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3 If your replacement hard drive does not have the plastic hard-drive bracket attached, remove the
bracket from the existing drive by unsnapping it from the drive.
4 Attach the bracket to the new drive by aligning the two securing tabs with the mounting holes in the
hard drive and then rotating the drive down snapping it onto the bracket.
1 hard drive 2 release tabs (2) 3 plastic hard-drive bracket
1 securing tabs (2) 2 hard drive 3 release tabs (2)
4 plastic hard-drive bracket
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