Owners Manual

Table 12. System board jumpers and connectors (continued)
Item Connector Description
11. B1, B2, B5, B6 Memory module sockets for CPU 2
12. SL1_CPU2_PB2 Slimline cable connector 1
13. SL2_CPU2_PA2_SA2 Slimline cable connector 2
14. SLOT4_X16 (CPU1/2) M.2 riser / BOSS card S1V5 connector
NOTE: The M.2 solution for HW RAID BOSS card is Gen3 x8. C6526
slot 4 PCIe lanes are Gen3 x8 from CPU1 + Gen4 x8 from CPU2. This
is for Dell internal purpose only.
15. B3, B4, B7, B8 Memory module sockets for CPU 2
16. A1, A2, A5, A6 Memory module sockets for CPU 1
17. NPIO2_CPU1_PB1 NVMe Connector
18. LEAK_DET Leak Sensor Connector (Optional)
19. NPIO_CPU1_PA1_SA1 SATA / NVMe Connector
20. BATTERY Coin Cell Battery
System board jumper settings
For information about resetting the password jumper to disable a password, see the Disabling a forgotten password section.
Table 13. System board jumper settings
Jumper Setting Pin number Description
NVRAM_CLR 2, 3 The BIOS configuration settings are retained at system boot.
1, 2 The BIOS configuration settings are cleared at system boot.
PWRD_EN 1, 2 The BIOS password feature is enabled.
2, 3 The BIOS password feature is disabled. iDRAC local access is
unlocked at next AC power cycle. iDRAC password reset is
enabled in F2 iDRAC settings menu.
CAUTION: Be careful when changing the BIOS settings. The BIOS interface is designed for advanced users. Any
change in the setting could prevent your system from starting correctly and you might have potential loss of
data.
74 Jumpers and connectors