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Chapter 4: Motherboard Connections
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to inform you of a chassis intrusion when the chassis is opened. Refer to
the table below for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
4.2 Headers and Connectors
Onboard Fan Header
Two 4-pin fan headers (JFAN1, JFANPW) used for CPU/system cooling. These 4-pin fan
headers are backward compatible with a traditional 3-pin fan. The onboard fan speed is
controlled by Thermal Management (via Hardware Monitoring) in the BIOS. Please use all
4-pin fans on the motherboard for better thermal management and system cooling.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
TPM Header
The JTPM1 header is used to connect a Trusted Platform Module (TPM)/Port 80, which is
available from a third-party vendor. TPM/Port 80 is a security device which supports encryption
and authentication in hard drives. It allows the motherboard to deny access if the TPM
associated with the hard drive is not installed in the system.
Trusted Platform Module/Port 80 Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
P3V3
2
SPI_TPM_CS_N
3
PCIE_RESET_N#
4
SPI_PCH_MISO
5
SPI_PCH_CLK#
6
Ground
7
SPI_PCH_MOSI
8
N/A
9
JTPM1_P3V3A
10
IRQ_TPM_SPIN_N