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H8DMT+/H8DMT-INF+ User's Manual
Serial Ports
The COM1 serial port is located
beside the VGA port. Refer to the
motherboard layout for the location of
the COM2 header. See the table on
the right for pin defi nitions.
Fan Headers
The H8DMT+/H8DMT-INF+ has four
6-pin proprietary fan headers. Each
fan header supports two 3-pin fans.
See the table on the right for pin
defi nitions.
Note: The onboard fan speed is con-
trolled by the CPU die temperature.
LAN1/2 (Ethernet Ports)
Two Gigabit Ethernet ports (desig-
nated LAN1 and LAN2) are located
beside the COM2 port. These Ether-
net ports accept RJ45 type cables.
Overheat LED
Connect an LED to the JOH1 header
to provide warning of chassis over-
heating. See the table on the right for
pin defi nitions.
Chassis Intrusion
A Chassis Intrusion header is located
at JL1. Attach the appropriate cable to
inform you of a chassis intrusion.
Serial Port Pin Defi nitions
(COM1/COM2)
Pin #
Defi nition
1
DCD
2
RXD
3
TXD
4
DTR
5
Ground
Note: NC indicates no connection.
Fan Header Pin Defi nitions
(Fan1 - Fan4)
Pin #
Defi nition
1
PWR (DC
Speed CTRL)
2
Tachometer for
Fan 1/3/5
3
Ground
Overheat LED
Pin Defi nitions (JOH1)
Pin#
Defi nition
1
3.3V
2
OH Active
Chassis Intrusion
Pin Defi nitions (JL1)
Pin#
1
2
2-10
Pin #
Defi nition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
Pin #
Defi nition
4
Ground
5
Tachometer for
Fan 2/4/6
6
PWR (DC
Speed CTRL)
Defi nition
Battery voltage
Intrusion signal
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