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USB Headers
Four additional USB2.0 headers
(USB4/5 and USB6/7) are included on
the serverboard. These may be con-
nected to provide front side access.
A USB cable (not included) is needed
for the connection. See the table on
the right for pin defi nitions.
Serial Ports
The COM1 serial port is located be-
side the VGA port. COM2 is a header
located near JWOL. Refer to the table
on the right for pin defi nitions.
Fan Headers
The H8DMU+ has eight fan headers,
which are designated FAN1 through
FAN8. FAN7 and FAN8 (for active
CPU heatsinks) are Pulse Width
Modulated (PWM): their speed is
controlled via a BIOS setting. See the
table on the right for pin defi nitions.
Note: when using active heatsinks
(those with fans), connect the heatsink
fan for CPU1 to the FAN7 header and
the heatsink fan for CPU2 to the FAN8
header.
LAN1/2 (Ethernet Ports)
Two Gigabit Ethernet ports (desig-
nated LAN1 and LAN2) are located
beside the VGA port. These Ethernet
ports accept RJ45 type cables.
Chapter 5: Advanced Serverboard Setup
Universal Serial Bus Headers
Pin Defi nitions (USB4/5/6/7)
USB2
Pin #
Defi nition
1
+5V
2
PO-
3
PO+
4
Ground
5
Key
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
(FAN1-8)
Pin#
Defi nition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
5-15
USB3/4
Pin #
Defi nition
1
+5V
2
PO-
3
PO+
4
Ground
5
No connection
Pin #
Defi nition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
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