Lenovo System x3850 X6 Installation And Service Manual page 52

8
7
6
5
4
3
2
1
SW2
switch
block
(reserved)
NMI
button
3
2
1
IMM security
jumper (J35)
The following table describes the jumper on the standard I/O book board.
Table 2. standard I/O book jumper
Jumper number
J35
Note: If no jumper is present, the server responds as if the pins are set to the default.
The following table describes the functions of the SW1 switch block on the standard I/O book board.
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System x3850 X6 and x3950 X6 Installation and Service Guide
SW1
switch
block
Jumper name
IMM security jumper
Jumper setting
• Pins 1 and 2: Removes the
security check, allowing unsigned
IMM firmware.
• Pins 2 and 3: (default) Allows only
signed IMM firmware to be
flashed.