2-12
H8DMR-82/H8DMR-i2 User's Manual
Fan Headers
The H8DMR-82/H8DMR-i2 has fi ve-
fan headers, which are designated
FAN1 through FAN5. See the table
on the right for pin defi nitions.
Note:
when using active heatsinks
(those with fans), connect the heatsink
fans to the nearest fan header.
Serial Ports
The COM1 port is located on the I/O
backplane. COM2 is a header (see
layout diagram for location). Refer
to the table on the right for pin defi ni-
tions.
JLAN1/2 (Ethernet Ports)
Two Gigabit Ethernet ports (desig-
nated LAN1 and LAN2) are located
on the I/O backplane. These Ethernet
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
(FAN1-5)
Pin# Defi nition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
USB Headers
F o u r a d d i t i o n a l U S B 2 . 0 h e a d -
ers (USB2/3) 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 (USB2/3)
USB2
Pin # Defi nition
USB3/4
Pin # Defi nition
1
+5V
1
+5V
2
PO-
2
PO-
3
PO+
3
PO+
4
Ground
4
Ground
5
Key
5
No connection
