Gateway Tower User Manual page 266

Chapter 13: Upgrading Your Computer
4
Rotate the power supply retention clip away from the power supply.
5
Slide the old power supply toward the front of the case, then up.
6
Install the new power supply into the case, then rotate the power supply
retention clip toward the power supply.
7
Reconnect the power supply cables using your notes from Step 3. See the
power supply documentation for more information.
8
Close the case using the instructions in "Closing the case" on page 246.
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