System Board; Removing The System Board - Dell OptiPlex 5090 Tower Service Manual

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 fan duct
2. Install the front bezel.
3. Install the side cover.
4. Follow the procedure in

System board

Removing the system board

Prerequisites
1. Follow the procedure in
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.
56 Removing and installing components
after working inside your
before working inside your
computer.
computer.