Lenovo System x3250 M4 Installation And Service Manual page 37

(cy1cd021a)
Low security
jumper (J 19) P
TPM physical
presence
jumper (JP 10)
ME recovery
jumper (JP 8)
Clear CMOS
jumper (JP 1)
ME flash override
jumper (JP 9)
Figure 5. Location of the switches, jumpers, and buttons on the system board
The following table describes the jumpers on the system board.
Table 2. Jumpers definition
Jumper number
JP1
JP2
JP8
JP9
JP10
BIOS boot backup IMM SPI HALF ROM
jumper (J 2) P enable jumper (J 12)
TPM initialization
jumper (JP 11)
Jumper name
Clear CMOS jumper
BIOS block backup jumper
ME recovery jumper
ME flash override jumper
Trusted Platform Module (TPM) physical
presence jumper
P
DIMM 4
DIMM 3
DIMM 2
DIMM 1
Microprocessor
Jumper setting
• Pins 1 and 2: Keep CMOS data
(default)
• Pins 2 and 3: Clear CMOS data
• Pins 1 and 2: Boot from primary BIOS
page (default)
• Pins 2 and 3: Boot from backup BIOS
page
• Pins 1 and 2: Normal (default).
• Pins 2 and 3: Activate ME recovery.
• Pins 1 and 2: Normal (default).
• Pins 2 and 3: Override ME flash.
Pins 1 and 2: Enable TPM physical
presence (default)
Pins 2 and 3: Disable TPM physical
presence
Chapter 2
.
Installing optional devices
23