Owners Manual

Steps
1. Fold the PPID label around the cable.
2. Push the cable until the cable passes completely through the channel.
CAUTION: To prevent damage to the I/O cable, you must release the locking tab before removing or installing the
I/O cable from the connector on the hard-drive backplane.
3. If locked, rotate the locking tab on the I/O cable connector clockwise 90 degrees to release the lock.
4. Connect the I/O panel cable to the connector on the hard-drive backplane.
5. Rotate the locking tab on the I/O cable connector counter clockwise 90 degrees to secure the lock.
6. Tighten the screws to secure the control panel to the chassis.
NOTE: You must route the cable properly to prevent it from being pinched or crimped.
Next steps
Complete the tasks listed in the After working inside your system section in this document.
Related References
Safety instructions on page 46
Related tasks
Before working inside your system on page 47
After working inside your system on page 47
System board
A system board (also known as the motherboard) is the main printed circuit board found in systems. The system board allows
communication between many of the crucial electronic components of the system, such as the central processing unit (CPU) and
memory, and also provides connectors for other peripherals. Unlike a backplane, a system board contains a significant number of
subsystems such as the processor, expansion cards, and other components.
Removing system board
Prerequisites
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.
CAUTION: If you are using the Trusted Platform Module (TPM) with an encryption key, you may be prompted to create
a recovery key during program or System Setup. Be sure to create and safely store this recovery key. If you replace this
system board, you must supply the recovery key when you restart your system or program before you can access the
encrypted data on your HDDs.
CAUTION: Do not attempt to remove the TPM plug-in module from the motherboard. Once the TPM plug-in module is
installed, it is cryptographically bound to that specific motherboard. Any attempt to remove an installed TPM plug-in
module breaks the cryptographic binding, and it cannot be re-installed or installed on another motherboard.
1. Ensure that you read the Safety instructions section in this document.
2. Complete the tasks listed in the Before working inside your system section in this document.
3. Remove the following:
a. cooling shroud
b. Cooling-fan assembly
c. hard-drive tray (if installed)
d. power supply unit(s)
Installing and removing system components
117