Miscellaneous Headers; Table 36. Three-Pin Fan Headers Pin-Out; Table 37. Bios Setup Configuration Jumper Settings (J8J2); System Recovery And Update Jumper - Intel S875WP1LX Specification

S875WP1-E TPS

5.13 Miscellaneous Headers

5.13.1 Fan Headers
The Intel Server Board S875WP1-E provides four 3-pin fan headers. All fans use direct 12 volts.
Four of the five fans, labeled "CPU_FAN", "SYSFAN1", "SYSFAN2" and "SYSFAN4" are wired
to a fan tachometer input of the Hardware Management ASIC. The third system fan, labeled
"SYSFAN3" is not wired to the input of the Hardware Management ASIC and therefore is not
monitored by any server management software.
Pin Signal Name
1 CNTL
2 VREG_12V_POWER
3 Fan Tach

5.14 System Recovery and Update Jumper

CAUTION
Do not move any jumpers with the power on. Always turn off the power and unplug the power cord
from the computer before changing a jumper setting. Otherwise, the board could be damaged.
This 3-pin jumper block determines the BIOS Setup program mode. Table 37 describes the
jumper settings for the three modes: normal, configure, and recovery. When the jumper is set to
configuration mode and the computer is powered-up, the BIOS compares the CPU version and
the microcode version in the BIOS and reports if the two match.

Table 37. BIOS Setup Configuration Jumper Settings (J8J2)

Function/Mode Jumper Setting
Normal
1-2
Configure
2-3
Recovery
None
Revision 4.0

Table 36. Three-Pin Fan Headers Pin-Out

Type
Power GROUND is the power supply ground
Power 12 V
Out FAN_TACH signal is connected to the Hardware Management ASIC to
monitor the fan speed
The BIOS uses current configuration information and passwords for
3
booting.
1
After the POST runs, Setup runs automatically. The maintenance
3
menu is displayed.
1
The BIOS attempts to recover the BIOS configuration. A recovery
3
diskette is required.
1
Connectors and Jumper Blocks
Description
Configuration
49