Lenovo HX3510-G Installation And Service Manual page 39

System TPM physical
presence jumper
UEFI boot backup jumper
Figure 22. System-board switches, jumpers, and buttons
The following table describes the jumpers on the system board.
Table 2. System board jumpers
Jumper number
J7
J11
J15
Notes:
1. If no jumper is present, the server responds as if the pins are set to the default.
2. Changing the position of the UEFI boot backup jumper (J15) from pins 1 and 2 to pins 2 and 3 before the server
is turned on alters which flash ROM page is loaded. Do not change the jumper pin position after the server is
turned on. This can cause an unpredictable problem.
Jumper name
System TPM physical presence
jumper
CMOS clear jumper
UEFI boot backup jumper
Jumper setting
• Pins 1 and 2: Normal (default).
• Pins 2 and 3: Indicates a physical presence to
the system TPM.
• Pins 1 and 2: Normal (default).
• Pins 2 and 3: Clears the real-time clock (RTC)
registry.
• Pins 1 and 2: Normal (default). Loads the
primary server firmware ROM page.
• Pins 2 and 3: Loads the secondary (backup)
server firmware ROM page.
.
Chapter 1 The Lenovo Converged HX Series server
Switch block 6 (SW6)
CMOS clear jumper
27