Dell Precision 3660 Manuel De Maintenance page 80

Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the connectors on your system board.
1. Intrusion switch connector
3. ATX CPU power connector : 1 and 2
5. SATA power connector
7. Coin cell battery
9. Power remote connector
11. Intrusion speaker connector
13. Front system fan connector 2
15. SATA 4 connector
17. SATA 2 connector
80 Retrait et installation de composants
2. CPU
4. Memory module slots
6. M2 SSD slot
8. Front system fan connector 1
10. Power switch connector
12. WLAN slot
14. Internal USB connector
16. SATA 3 connector
18. SATA 1 connector