
OptiPlex 5090 Micro Form Factor Service Manual
Removing the system board
Prerequisites
- Follow the procedure in before working inside your computer.
- Remove the side cover.
- Remove the hard-drive assembly.
- Remove the solid-state drive.
- Remove the WLAN card.
- Remove the fan assembly.
- Remove the heat-sink.
- Remove the memory module.
- Remove the speaker.
- Remove the processor.
About this task
The following images indicate the location of the system board and provide a visual representation of the removal procedure.

- M.2 WLAN connector
- 2.5-inch hard-drive connector
- M.2 SSD PCIe connector
- Coin-cell battery
- Optional video connector (VGA Port/DisplayPort 1.4 Port/HDMI 2.0b Port)
- Optional connector (USB 3.2 Gen 2 Type-C Port)
- Optional Keyboard and mouse serial port connector
- Processor socket
- CPU Fan connector
- Internal speaker connector
- Memory slots
- Intrusion switch

Steps
- Remove the screw (6-32) that secures the hard drive support to the system board.
- Lift the hard drive support away from the system board.
- Remove the two (M3x4) screws and three (6-32) screws that secure the system board to the chassis.
- Lift the system board away from the chassis.
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