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H8DGT-HLF/HLIBQF Serverboard User's Manual
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.
Unit Identifi er Button
A Unit Identifi er (UID) button is located on
the rear of the board. There is another UID
button located on the control panel. When
you push either UID button, both Rear
UID and Front Panel UID Indicators will
illuminate. Push either button again to turn off
both indicators. These UID indicators provide
easy identifi cation of a system unit that may
be in need of service.
Video Connector
A Video (VGA) connector is located below
the COM Port on the IO backplane. This
connector is used to provide video and CRT
display.
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.
Pin# Defi nition
1
2
Pin#
1
2
3
4
Trusted Platform Module Header
Pin# Defi nition
1
LCLK
3
LFRAME
5
LRESET
7
LAD3
9
VCC3
11
LAD0
13
RSV0
15
SB3V
17
GND
19
LPCPD
2-10
Overheat LED
Pin Defi nitions
(JOH1)
3.3V
OH Active
UID Button
Pin Defi nitions
Defi nition
Ground
Ground
Button In
Ground
Pin Defi nitions
(JTPM1)
Pin# Defi nition
GND
No Pin
VCC5
LAD2
LAD1
GND
RSV1
SERIRQ
CLKRUN
RSV2
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