Dell Vostro 20–3055 Owner's Manual page 10

c. back cover
3. Perform the following steps as shown in the illustration:
a. Disconnect the hard-drive cable from the computer [1].
b. Remove the screw that secures the hard-drive to the computer [2].
c. Slide the hard-drive [3].
4. Remove the hard-drive from the computer.
5. Remove the screws that secure the hard-drive to the bracket, lift the hard-drive from bracket [1,2]
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