Dell OptiPlex 7450 All-In-One Owner's Manual

Removing the system board

1. Follow the procedure in Before working inside your computer.
2. Remove the:
   1. stand
   2. back cover
   3. cable cover
   4. speaker cover
   5. speaker
   6. hard drive
   7. optical drive
   8. VESA mount bracket
   9. system board shield
   10. SSD card
   11. WLAN card
   12. memory
   13. heat sink
   14. system fan
   15. processor
   16. coin cell battery
   17. power supply unit
3. Disconnect the following cables from the system board:
   1. intrusion switch [1]
   2. hard drive and optical drive [2]
   3. SATA [3]
   4. speaker [4]
   5. camera and microphone [5]
   6. display [6]
   7. system fan [7]
   
4. To remove the system board:
   1. Remove the screws that secure the system board to the chassis [1].
   2. Slide and lift the system board away from the computer [2].