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SuperWorkstation 7049GP-TRT User's Manual
4.2 Headers and Connectors
Fan Headers
There are eight fan headers on the motherboard. These are 4-pin fan headers; pins 1-3
are backward compatible with traditional 3-pin fans. The onboard fan speeds are controlled
by Thermal Management (via Hardware Monitoring) in the BIOS. When using Thermal
Management setting, please use all 3-pin fans or all 4-pin fans.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
Internal Speaker/Buzzer
The Internal Speaker/Buzzer (SP1) is used to provide audible indications for various beep
codes. See the table below for pin definitions.
Internal Buzzer
Pin Definitions
Pin#
Definition
1
Pos (+)
Beep In
2
Neg (-)
Alarm Speaker
S-SGPIO Header
A Serial General Purpose Input/Output header (S-SGPIO) is located on the motherboard.
This header is used to communicate with the enclosure management chip on the backplane.
See the table below for pin definitions.
SGPIO Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
NC
2
NC
3
Ground
4
DATA Out
5
Load
6
Ground
7
Clock
8
NC
NC = No Connection