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Chapter 3 Motherboard Connections
Trusted Platform Module Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
LCLK
2
GND
3
LFRAME#
4
No Pin
5
LRESET#
6
+5V (X)
7
LAD3
8
LAD2
9
3.3V
10
LAD1
11
LAD0
12
GND
13
SMB_CLK4 (X)
14
SMB_DAT4 (X)
15
P3V3_STBY
16
SERIRQ
17
GND
18
GND
19
P3V3_STBY
20
LDRQ# (X)
TPM Header
The JTPM1 header is used to connect a Trusted Platform Module (TPM). A TPM can securely
store artifacts used to authenticate the platform. These artifacts can include passwords,
certificates, or encryption keys.
1
2
19
20
JTPM1 Pin Layout
Disk-On-Module Power Connector
The Disk-On-Module (DOM) power connector at JSD1 provides 5V power to a solid-state
DOM storage device connected to one of the SATA ports.
DOM Power
Pin Definitions
Pin#
Definition
1
5V
2
Ground
3
Ground
DOM Power Pin Layout
1 2 3
Overheat LED Header
The JOH1 header is used to connect an LED indicator to provide warnings of chassis
overheating.
Overheat LED
Pin Definitions
Pin # Definition
1
3.3V
2
OH Active
