- Notes, cautions, and warnings
- Working on your computer
- Major components of your system
- Technology and components
- Disassembly and reassembly
- Recommended tools
- Screw List
- Side cover
- Front bezel
- Fan shroud
- Hard-drive assembly
- 3.5-inch hard drive
- Solid-state drive
- Memory modules
- Processor fan and heat-sink assembly
- Processor
- Graphics card
- Graphical processing unit
- Coin-cell battery
- WLAN card
- Slim optical-drive
- Slim optical-drive bracket
- Power button
- Power-supply unit
- Intrusion switch
- System board
- Troubleshooting
- Getting help and contacting Dell
Vostro 3888 Service Manual
Installing the power-supply unit
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
WARNING The cables and ports on the back of the power-supply unit are color-coded to indicate the different power wattage. Ensure that you plug in the cable to the correct port. Failure to do so may result in damaging the power-supply unit and/or system components.
About this task
The following images indicate the location of the power-supply unit and provides a visual representation of the installation procedure.
Steps
- Place and slide the power supply into its slot on the chassis.
- Replace the three (#6-32) screws to secure the power-supply unit to the chassis.
- Route the power cable through the routing guides on the chassis and connect the power cables to their respective connectors on the system board.
NOTE The power-supply cable is connected to the system board at two locations and supply power to the following components at the two location:
- Processor - ATX CPU connector
- System board - ATX SYS connector
Next steps
- Install the side cover.
- Follow the procedure in After working inside your computer.
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