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Chapter 4: Motherboard Connections
Chapter 4
Motherboard Connections
This section describes the connections on the motherboard and provides pinout definitions.
Note that depending on how the system is configured, not all connections are required.
The LEDs on the motherboard are also described here. A motherboard layout indicating
component locations may be found in Chapter 1.
Please review the safety precautions in Appendix A before installing or removing components.
4.1 Node Front Panel Controls
Power Button/LED
There is an On/Off button (SW2) with integrated LED on the I/O panel of each node. The
function is described in Chapter 1.
Unit Identifier Switch/UID LED Indicator
A Unit Identifier (UID) switch and an LED Indicator are located on the motherboard. The UID
switch is located at JUIDB1, which is next to the VGA port on the I/O panel. The UID LED
(LED5) is located next to the UID switch. When you press the UID switch, the UID LED will
be turned on. Press the UID switch again to turn off the LED indicator. The UID Indicator
provides easy identification of a system unit that may be in need of service.
Note:
UID can also be triggered using IPMI on the motherboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at
http://www.supermicro.com
.
4.2 Headers and Connectors
TPM Header
The JTPM1 header is used to connect a Trusted Platform Module (TPM)/Port 80, which is
available from a third-party vendor. 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
aTPM associated with the hard drive is not installed in the system. Go to the following link
for more information on the TPM:
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
9
+3.3V Stby
10
SPI_IRQ#
