Motherboard Layout; Side Cover; Removing The Side Cover - Dell Precision 3431 Service Manual

Motherboard layout

1. PCI-e x16 connector (slot 2)
3. USB Type-C connector
5. Intrusion switch connector (Intruder)
7. Processor socket (CPU)
9. Memory slots (DIMM1, DIMM2, DIMM3, DIMM4)
11. Remote PWR switch connector
13. M.2 SSD card/Intel Optane connector
15. Clear password jumper (PASSWORD_CLR)
17. PSU connector
19. Internal speaker connector (INT_SPKR)
21. Internal USB connector (FRONT_USB
23. SATA 2 connector

Side cover

Removing the side cover

1. Follow the procedure in
2. To remove the cover:
a) Slide the release latch on the back side of your system until it gives a click sound to unlock the side cover [1].
b) Slide and lift the side cover from the system [2].
Before working inside your
2. PCI-e x4 connector (slot1—open ended x4 to support x16
4. Video connector
6. CPU power connector (ATX_CPU)
8. CPU fan connector
10. Power switch connector (PWR_SW)
12. Media card reader connector (Card_reader)
14. System fan connector
16. SATA 0 connector
18. M.2 WLAN connector
20. SATA 3 connector
22. SATA power connector (SATA_PWR)
24. Coin cell battery
computer.
Removing and Installing components 19