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Chapter 4: Motherboard Connections
RAID Key Header
Pin Definitions
Pin#
Definition
1
Ground
2
PU 3.3V Stby
3
Ground
4
PCH RAID Key
4.2 Headers and Connectors
Fan Headers
Eight 4-pin fan headers (FAN1~6, FANA, FANB) are located on the motherboard to provide
CPU/system cooling. These 4-pin fan headers are backward compatible with traditional 3-pin
fans. Fan speed control is supported by a thermal management setting in the BMC (Baseboard
Management Controller) and is only available only when all 4-pin fans are used.
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 Supermicro. A TPM/Port 80 connector is a security device that 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
+3.3V
2
SPI_CS#
3
RESET#
4
SPI_MISO
5
SPI_CLK
6
GND
7
SPI_MOSI
8
9
+3.3V Stdby
10
SPI_IRQ#
RAID Key Header
A RAID Key header is located at JRK1 on the motherboard. The RAID key is used to support
NVMe RAID.
