User's Manual (1.2a)

H8DG6/i(-F) SERVERBOARD USER'S MANUAL
2-16
Overheat LED
Connect an LED to the JOH1
header to provide warning of chassis
overheating. See the table on the right
for pin defi nitions.
Overheat LED
Pin Defi nitions
(JOH1)
Pin# Defi nition
1 3.3V
2 OH Active
Trusted Platform Module Header
This header is used to connect a
Trusted Platform Module (TPM),
available separately from a third-party
vendor. A TPM is a security device that
allows encryption and authentication of
hard drives, disallowing access if the
TPM associated with it is not installed
in the system. See the table on the
right for pin defi nitions.
Trusted Platform Module Header
Pin Defi nitions (JTPM1)
Pin# Defi nition Pin# Defi nition
1 LCLK 2 GND
3 LFRAME 4 No Pin
5 LRESET 6 VCC5
7 LAD3 8 LAD2
9 VCC3 10 LAD1
11 LAD0 12 GND
13 RSV0 14 RSV1
15 SB3V 16 SERIRQ
17 GND 18 CLKRUN
19 LPCPD 20 RSV2
JSMB1
A System Management Bus header
for the IPMI slot is located at IPMB for
the H8DG6-F/H8DGi-F serverboards.
Connect the appropriate cable here
to use the IPMB I2C connection on
your system.
JSMB1
Pin Defi nitions
Pin# Defi nition
1 Data
2 Ground
3 Clock
4 No Connection
Power SMB (I
2
C) Connector
The Power System Management Bus
(I
2
C) connector (JPI2C1) monitors
the power suppply, fan and system
temperatures. See the table on the
right for pin defi nitions.
Power SMB
Pin Defi nitions
(JPI2C1)
Pin# Defi nition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V