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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
Headers
Fan Header
Pin Denitions
Pin# Denition
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
SGPIO Header
Pin Denitions
Pin# Denition Pin# Denition
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 Denitions
Pin# Denition
1 5V
2 Ground
3 Ground