Dell 23.8" OptiPlex 7410 All-in-One Desktop Computer (Gray) - Manual (Page 51)

Steps
1. Place the system-board shield on the display-assembly base.
2. Align the screw holes on the system-board shield with the screw holes on the display-assembly base.
3. Replace the six screws (M3x5) that secure the system-board shield to the display-assembly base.
Next steps
1. Install the back cover .
2. Install the stand .
3. Follow the procedure in After working inside your computer .
Wireless card
Removing the wireless card
Prerequisites
1. Follow the procedure in Before working inside your computer .
2. Remove the stand .
3. Remove the back cover .
4. Remove the system-board shield .
Removing and installing Customer Replaceable Units (CRUs) 51