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Chapter 2: Installation
2-29
A. TPM/Port 80 Header
B. JOH1
TPM Header/Port 80
Trusted Platform Module/Port 80
header, located at JTPM1, provides
TPM support and Port 80 connection.
Use this header to enhance system
performance and data security. See
the table on the right for pin deni-
tions.
TPM/Port 80 Header
PinDenitions
Pin # Denition Pin # Denition
1 LCLK 2 GND
3 LFRAME# 4 <(KEY)>
5 LRESET# 6 +5V (X)
7 LAD 3 8 LAD 2
9 +3.3V 10 LAD1
11 LAD0 12 GND
13 SMB_CLK4 14 SMB_DAT4
15 +3V_DUAL 16 SERIRQ
17 GND 18 CLKRUN# (X)
19 LPCPD# 20 LDRQ# (X)
Overheat LED/Fan Fail
The JOH1 header is used to connect
an LED indicator to provide warnings
of chassis overheating and fan failure.
This LED will blink when a fan failure
occurs. Refer to the tables on right for
pin denitions.
Overheat LED
PinDenitions
Pin# Denition
1 5vDC
2 OH Active
OH/Fan Fail LED
Status
State Message
Solid Overheat
Blinking Fan Fail
A
B