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Chapter 4: Motherboard Connections
Serial (COM) Header
There is one serial (COM) header on the motherboard. COM1 is located next to expansion
SLOT1 (PCI 33MHz). Refer to the table below for pin definitions.
Serial (COM) Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
Ground
10
N/A
Power LED Header
An onboard Power LED header is located at JLED1. This Power LED header is connected to
Front Control Panel located at JF1 to indicate the status of system power. Refer to the table
below for pin definitions.
Power LED Header
Pin Definitions
Pin#
Definition
1
VCC
2-3
Connection to PWR LED in JF1
TPM/Port 80 Header
A Trusted Platform Module (TPM)/Port 80 header is located at JTPM1 to provide TPM 2.0
support and Port 80 connection. Use this header to enhance system performance and data
security. Refer to the table below for pin definitions. Please go to the following link for more
information on the TPM:
http://www.supermicro.com/manuals/other/TPM.pdf
.
TPM/Port 80 Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
P3V3
2
SPI_TPM_CS_N
3
PCIE_RESET_N
4
SPI_PCB_MISO
5
SPI_PCH_CLK
6
GND
7
SPI_PCH_MOSI
8
X
9
P3V3_STBY
10
IRQ_TPM_SPI_N