2-12
H8DA3-2/H8DAi-2 User's Manual
Fan Headers
The H8DA3-2/H8DAi-2 has eight fan
headers, which are designated FAN1
through FAN8. Fans are Pulse Width
Modulated (PWM) and their speed is
controlled via Thermal Management
with 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.
Serial Ports
The COM1 and COM2 serial ports are
located under the parallel port. Refer
to Figure 2-3 for locations and the
table on the right for pin defi nitions.
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.
Note:
NC indicates no connection.
Serial Port Pin Defi nitions
(COM1/COM2)
Pin # Defi nition
Pin # Defi nition
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
Ground
10
NC
Fan Header
Pin Defi nitions
(FAN1-8)
Pin# Defi nition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
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.
Universal Serial Bus Headers
Pin Defi nitions (USB4/5/6/7)
USB4/6
Pin # Defi nition
USB5/7
Pin # Defi nition
1
+5V
1
+5V
2
PO-
2
PO-
3
PO+
3
PO+
4
Ground
4
Ground
5
Key
5
No connection
Notes:
LAN1 is the top port and LAN2 is the bot-
tom port.
