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Safety instructions
Before working inside your system
Removing the cooling shroud
Removing the cooling fan assembly
Removing an AC power supply unit
Removing expansion card risers
Removing the integrated storage controller card
Removing the optional internal dual SD module
Replacing the optional internal USB memory key
Removing the PCIe card holder
Removing the cable retention bracket
Removing a heat sink
Removing a processor
Removing memory modules
Removing the network daughter card
Installing the system board
After working inside your system
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Installing the system board
Prerequisites
1. Follow the safety guidelines listed in the Safety instructions section.
2. Follow the procedure listed in the Before working inside your system section.
CAUTION: Many repairs may only be done by a certified service technician. You should only 
perform troubleshooting and simple repairs as authorized in your product documentation, or as 
directed by the online or telephone service and support team. Damage due to servicing that is 
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions 
that are shipped with your product.
Steps
1. Unpack the new system board assembly.
CAUTION: Do not lift the system board by holding a memory module, processor, or other 
components.
CAUTION: Take care not to damage the system identification button while placing the 
system board into the chassis.
2. Hold the touch points and lower the system board into the chassis.
3. Push the system board toward the back of the chassis until the board clicks into place.
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