Dell EMC E58S PowerEdge R340 Installation And Service Manual page 71

Steps
1. Using a Phillips #2 screwdriver, remove the screws securing the system board to the chassis.
Figure 74. System board screws
2. Using the system board holder, slightly lift the system board, and then slide it toward the front of the chassis.
3. Lift the system board out of the chassis.
Installing and removing system components 71