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Chapter 4: Motherboard Connections
CMOS Battery
BT1 is a 2-pin connector for an external CMOS battery. This connector is also used to clear
the CMOS. To clear the CMOS, remove the battery, short pins 1-2 for more than 10 seconds,
and then install the battery.
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#
TPM/Port 80 Header
A Trusted Platform Module (TPM)/Port 80 header is located at JTPM1 to provide TPM 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
.
Disk-On-Module Power Connector
One power connector for SATA DOM (Disk-On-Module) devices is located at JSD1. Connect
appropriate cables here to provide power support for your Serial Link DOM devices.
DOM Power
Pin Definitions
Pin#
Definition
1
5V
2
Ground
3
Ground
LVDS Connector
LVDS1 is the LVDS connector. LVDS (low-voltage differential signaling) is a high-speed digital
interface that operates at low power. It is a type of connection that is mostly used with monitors.
