Owners Manual

Table 40. System Board Connectors and Description (continued)
Item Connector Description
8 LEDs (7) System board diagnostic LED indicators
9 PCIe Slot 4 Slot 4: x16 PCIe Gen3 CPU 1
10 Batt System battery
11 PWDCLR Password clear jumper
12 NVRAMCLR NVRAM clear jumper
13 PCIe Slot 3 Slot 3: x8 PCIe Gen3 from CPU 1
14 TPM TPM connector
15 PCIe Slot 1 Slot 1: x8 PCIe Gen3 from CPU 1
16 PCIe Slot 2 Slot 2: x8 PCIe Gen3 from CPU 1
17 SATA_A SATA cable connector
18 DIMM sockets (4) DIMM A7, DIMM A1, DIMM A2, DIMM A3
19 CPU 1 CPU socket 1
20 DIMM sockets (4) DIMM B7, DIMM B1, DIMM B2, DIMM B3
21 CPU 2 CPU socket 2 (with a dust cover)
Disabling forgotten password
The software security features of the system include a system password and a setup password. The password jumper enables or
disables password features and clears any password(s) currently in use.
Prerequisites
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that are shipped with your product.
Steps
1. Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover.
3. Move the jumper on the system board jumper from pins 2 and 4 to pins 4 and 6.
4. Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6. However, before
you assign a new system and/or setup password, you must move the jumper back to pins 2 and 4.
NOTE:
If you assign a new system and/or setup password with the jumper on pins 4 and 6, the system disables the new
password(s) the next time it boots.
5. Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
6. Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
7. Remove the system cover.
8. Move the jumper on the system board jumper from pins 4 and 6 to pins 2 and 4.
9. Install the system cover.
10. Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
11. Assign a new system and/or setup password.
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Jumpers and connectors