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 defini
-
tions.
TPM/Port 80 Header
Pin Definitions
Pin # Definition
Pin # Definition
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 definitions.
Overheat LED
Pin Definitions
Pin# Definition
1
5vDC
2
OH Active
OH/Fan Fail LED
Status
State Message
Solid
Overheat
Blinking
Fan Fail
A
B
