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Chapter 4: Motherboard Connections
4.2 Headers and Connectors
Fan Headers
There are seven 4-pin fan headers (FAN1 - FAN7) on the motherboard.
All these 4-pin fan
headers are backwards compatible with the traditional 3-pin fans. However, fan speed control
is available for 4-pin fans only by the Thermal Management via the IPMI 2.0 interface. Refer
to the table below for pin definitions.
Headers
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
2.5A/+12V (Red)
3
Tachometer
4
PWM_Control
SGPIO Headers
There is one Serial Link General Purpose Input/Output (S-SGPIO1) header located on the
motherboard. S-SGPIO is for sSATA use. Refer to the tables below for pin definitions.
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
Disk-On-Module Power Connector
Two power connectors for SATA DOM (Disk-On-Module) devices are located at JSD1 and
JSD2. Connect appropriate cables here to provide power support for your Serial Link DOM
devices.
DOM Power
Pin Definitions
Pin#
Definition
1
5V
2
Ground
3
Ground
