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8-Pin Power Connector
JPWR1 is an 8-pin 12V DC power input for the processors, which must be connected to the
power supply. Refer to the table below for pin definitions.
4.2 Headers and Connectors
Fan Headers
There are eight 4-pin fan headers on the motherboard. Pins 1-3 are backward compatible
with traditional 3-pin fans. The onboard fan speeds are controlled by Thermal Management
via IPMI. When using Thermal Management setting, use all 3-pin fans or all 4-pin fans.
SGPIO Header
There is one Serial Link General Purpose Input/Output (S-SGPIO1) header located on the
motherboard. Refer to the table below for pin definitions.
8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 8
P12V (12V Power)
Required Connection
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
2.5A/+12V (Red)
3
Tachometer
4
PWM_Control
SGPIO Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
NC
2
NC
3
Ground
4
Data
5
Load
6
Ground
7
Clock
8
NC
NC = No Connection
45
Chapter 4: Motherboard Connections
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