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Dell Precision Tower 3420 - Memory and Processor Installation

Dell Precision Tower 3420
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b. cover
6. Follow the procedure in After Working Inside Your Computer.
Removing the intrusion switch
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. heat sink fan cover
3. To remove the intrusion switch:
a. Disconnect the intrusion switch cable from the connector on the system board [1, 2].
b. Slide the intrusion switch and lift it away from the computer [3].
Installing the intrusion switch
1. Insert the intrusion switch into the slot on the chassis.
2. Connect the intrusion switch cable to the system board.
3. Install the:
a. heat sink fan cover
b. cover
4. Follow the procedure in After Working Inside Your Computer.
Removing the memory module
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. hard drive
c. optical drive
3. To remove the memory module:
a. Press the memory module retention tabs on both sides of the memory module.
b. Lift the memory module from the memory module connector on the system board.
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