Dell OptiPlex 7090 Tower Service Manual - Page 74

System board, Removing the system board

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Steps 1. To remove the dummy metal bracket, insert a flat-head screwdriver in the hole of the bracket, push the bracket to release the bracket, and then lift the bracket out from the system. 2. Insert the optional I/O module (Type-C/HDMI/VGA/DP/Serial) into its slot from the inside of your computer. 3. Connect the I/O cable to the connector on the system board . 4. Replace the two (M3X3) screws to secure the optional I/O module to the system. Next steps 1. Install the chassis fan. 2. Install the front bezel. 3. Install the side cover. 4. Follow the procedure in after working inside your computer. System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer. NOTE: Your computer's Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again after you replace the system board. 74 Removing and installing components

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Steps
1.
To remove the dummy metal bracket, insert a flat-head screwdriver in the hole of the bracket, push the bracket to release
the bracket, and then lift the bracket out from the system.
2.
Insert the optional I/O module (Type-C/HDMI/VGA/DP/Serial) into its slot from the inside of your computer.
3.
Connect the I/O cable to the connector on the system board .
4.
Replace the two (M3X3) screws to secure the optional I/O module to the system.
Next steps
1.
Install the
chassis fan
.
2.
Install the
front bezel
.
3.
Install the
side cover
.
4.
Follow the procedure in
after working inside your computer
.
System board
Removing the system board
Prerequisites
1.
Follow the procedure in
before working inside your computer
.
NOTE:
Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
NOTE:
Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup
program. You must make the appropriate changes again after you replace the system board.
74
Removing and installing components