Headers And Connectors - Supermicro SuperWorkstation SYS-531A-I User Manual

4.2 Headers and Connectors

Fan Headers
There are five 4-pin fan headers (FAN 1-2, FAN A-C) 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 Thermal Management via the IPMI 2.0 interface. Refer to
the table below for pin definitions.
Pump Power Header
The motherboard has one +12V 4-pin header for optional CPU liquid cooling systems. When
using a liquid cooling system, attach the pump power cable to the 12V_PUMP_PWR1 header.
Front Panel Audio Header
A 10-pin audio header (AUDIO FP) located on the motherboard allows you to use the onboard
sound chip (ALC888S) for audio function. Connect an audio cable to this header to use this
feature. Refer to the table below for pin definitions.
Fan Headers
Pin Definitions
Pin# Definition
1 Ground
2 2.5A/+12V
3 Tachometer
4 PWM_Control
Pump Power Header
Pin Definitions
Pin# Definition
1 Ground (Black)
2 2A/+12V (Red)
3 N/A
4 N/A
HD Front Panel Audio
Pin Definitions
Pin# Definition Pin#
1 Microphone_Left 2
3 Microphone_Right 4
5 Line_2_Right 6
7 Jack_Detect 8
9 Line_2_Left 10
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Chapter 4: Motherboard Connections
Definition
Audio_Ground
Audio_Detect
Ground
Key
Ground