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System Overview 1-15
Table 1-2. System-Board Jumper Descriptions
Jumper Settings Description
A, pins 1-3; B, pins 1-6; C,
pins 1-3 (microprocessor
speed)
The microprocessor’s internal speed is
233 MHz.
The microprocessor’s internal speed is
266 MHz.
A, pins 4-6 (reserved)
Reserved (do not change).
C, pins 4-6 (clear CMOS)
System setup settings are retained when the
system boots (default setting).
System setup settings revert to their defaults
when the system boots. (Set to pins 4-5 and
boot the system to clear NVRAM. Reset to
pins 5-6 to restore default CMOS settings at
system start-up.)
D, pins 1-3 (password)
The system and setup password features are
enabled (default setting).
The password features are disabled. (Set to
pins 1-2, and then turn on the system to clear
the password(s). Reset to pins 2-3 to enable
password features.)
D, pins 4-6 (setup)
Set to pins 5-6 to allow use of the system
setup program.
Set to pins 4-5 to prevent the loading of the
system setup program.
AB
4 6
4 6
1 3
1 3
C
4 6
1 3
4 6 4 6
1 3
1 3
C
1 3
4 6
B
A
A
4 6
1 3
C
4 6
1 3
1 3
4 6
C
1 3
4 6
D
1 3
4 6
D
1 3
4 6
D
1 3
4 6
D