Intel® Server Board SDS2 Jumpers
Revision 1.2
Order Number: A85874-002 91
The following tables describe each jumper options.Table 78. System Configuration Jumper Options
Option Description
CMOS
Clear When CN42’s pins 1 and 2 are OPEN (default), CMOS contents are preserved through the system
reset. When they are CLOSED, CMOS contents are set to manufacturing default during system
reset.
Password
Disable When CN42’s pins 3 and 4 are OPEN (default), the current system password is maintained during
a system reset. When they are CLOSED, the password is cleared / disabled on reset.
BIOS
Recovery
Enable
When CN42’s pins 9 and 10 are OPEN (default), the system attempts to boot using the BIOS
programmed in the Flash memory. When they are CLOSED, the BIOS attempts a recovery boot,
loading BIOS code from a floppy disk into the Flash device. This is typically used when the BIOS
code has been corrupted.
BIOS Write
Protect When CN46’s pins 1 and 2 are OPEN (default), BIOS boot block is protected from being updated.
When they are CLOSED, BIOS boot block can be updated
BMC Write
Protect When CN47’s pins 1 and 2 are OPEN (default), BMC boot block is protected from being updated.
When they are CLOSED, BMC boot block can be updated.
Chassis
Intrusion
Disable
When CN50’s pins 1 and 2 are cabled to the chassis (default), a switch installed on the chassis
indicates when the cover has been removed. When they are CLOSED, the chassis intrusion feature
is disabled.
BMC
Forced
Update
Mode
When CN49’s pins 1 and 2 are OPEN (default), the BMC enters operational mode upon the
negation of its reset. When they are CLOSED, the BMC enters force update mode upon the negation
of its reset.
FRB3
Timer
Disable
When CN48’s pins 1 and 2 are OPEN (default), FRB operation is enabled. This allows the system
to boot from another processor if Processor 1 fails. When they are CLOSED, FRB2 and FRB3 are
disabled.
Table 79. CPU Frequency Select Jumper Options
CN59 CPU Frequency Select Jumper Settings CPU
Frequency 1 – 2 3 – 4 5 – 6 7 – 8
533 MHz Open Open Open Open
933 MHz Closed Open Open Closed
1.0 GHz Closed Open Open Open
1.13 GHz Closed Open Closed Closed
1.20 GHz Closed Open Closed Open
1.26 GHz Closed Closed Closed Open
1.33 GHz Open Closed Open Open
1.40 GHz Open Closed Closed Closed
1.46 GHz Open Open Open Closed
1.53 GHz Open Closed Closed Open
1.60 GHz Open Open Closed Closed