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Fan Header
The X8DTT-H series motherboard has
one fan header on the motherboard. This
4-pin header is backward compatible with
traditional 3-pin fans, however, fan speed
control is only available for 4-pin fans.
The fan speeds are controlled by Thermal
Management via Hardware Monitoring in the
Advanced Setting in the BIOS. (The default
setting is disabled.) See the table on the right
for pin defi nitions.
Universal Serial Bus (USB)
Two Universal Serial Bus ports (USB0/1) are
located on the I/O back panel. In addition,
another two USB connections (USB2/3) are
located at JUSB2 to provide front chassis
access. Connect USB cables to these USB
ports/headers to use USB connections.
(USB cables are not included). See the
tables on the right for pin defi nitions.
Serial Ports
One serial port is included on the serverboard.
The COM port is located beside the VGA
port. See the table on the right for pin
defi nitions.
Chapter 5: Advanced Serverboard Setup
Pin#
1
2
3
4
Back Panel USB0/1
Pin# Defi nition
1
+5V
2
USB_PN1
3
USB_PP1
4
Ground
Front Panel USB2/3
USB 2
Pin #
Defi nition
1
+5V
2
USB_PN2
3
USB_PP2
4
Ground
5
No
Connection
Serial Port Pin Defi nitions
Pin # Defi nition
1
DCD
2
RXD
3
TXD
4
DTR
5
Ground
(NC: No Connection)
5-15
Fan Header
Pin Defi nitions
Defi nition
Ground
+12V
Tachometer
PWR Modulation
Pin Defi nitions
Pin#
Defi nition
5
+5V
6
USB_PN0
7
USB_PP0
8
Ground
Pin Defi nitions
USB 3
Pin #
Defi nition
6
+5V
7
USB_PN3
8
USB_PP3
9
Ground
10
Key
Pin Defi nitions
Pin # Defi nition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
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