Dell Precision 3640 Tower - Installing the 3.5-Inch Hard Drive

2. Remove the cover.
3. Disconnect the data cable and the power cable from the hard drive [1].
4. Press the blue securing bracket tabs [2] and lift the hard drive bracket out of the hard drive bay [3].
5. Flex the hard drive bracket [1] and lift the hard drive from the hard drive bracket [2].
6. To remove additional hard drive (if available), repeat steps from 3 to 5.
Installing the 3.5-inch hard drive
Steps
1. Insert the holes on one side of the hard disk into the pins on the hard drive bracket and then place the hard drive into the bracket.
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Disassembly and reassembly