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Chapter 4: Motherboard Connections
4.2 Headers and Connectors
Onboard Fan Header
There are six 4-pin fan headers (FAN1–FAN4, FANA, FANB) on the motherboard.
They are
backward compatible with a traditional 3-pin fan. The onboard fan speed is controlled by
Thermal Management (via Hardware Monitoring) in the IPMI 2.0. Use all 4-pin fans on the
motherboard for better thermal management.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
TPM/Port 80 Header
The JTPM1 header is used to connect a Trusted Platform Module (TPM)/Port 80, which is
available from Supermicro. TPM/Port 80 is a security device which supports encryption and
authentication in hard drives. For more informatio, see:
http://www.supermicro.com/manuals/
other/TPM.pdf
.
Trusted Platform Module Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+3.3V
2
SPI_CS#
3
RESET#
4
SPI_MISO
5
SPI_CLK
6
GND
7
SPI_MOSI
8
NC
9
+3.3V Stdby
10
SPI_IRQ#
Onboard Power LED Header
JLED1 is the header for the onboard power LED.
Onboard PWR LED
Pin Definitions
Pins
Definition
1
VCC
2
GND
3
GND
