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RESET (Reset Switch):
Connect to the reset switch on the chassis front panel. Press the reset
switch to restart the computer if the computer freezes and fails to perform a
normal restart.
PLED (System Power LED):
Connect to the power status indicator on the chassis front panel. The LED
is on when the system is operating. The LED keeps blinking when the sys-
tem is in S1/S3 sleep state. The LED is off when the system is in S4 sleep
state or powered off (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. The LED
is on when the hard drive is reading or writing data.
The front panel design may differ by chassis. A front panel module mainly
consists of power switch, reset switch, power LED, hard drive activity LED,
speaker and etc. When connecting your chassis front panel module to this
header, make sure the wire assignments and the pin assign-ments are
matched correctly.
COM Port Headers
(10-pin COM1, 2, 3, 4: see p.8, No. 11)
* This motherboard supports RS232/422/485 on COM3, 4 ports. Please refer to below table for
the pin definition. In addition, COM3, 4 port (RS232/422/485) can be adjusted in BIOS setup
utility > Advanced Screen > Super IO Configuration. You may refer to page 31 for details.
PIN
1
2
3
4
5
6
7
8
9
USB 2.0 Headers
(9-pin USB2_4_5: see p.8, No. 1)
(9-pin USB2_6_7: see p.8, No. 2)
1
Signal
PIN
Name
2
RRXD
1
DDCD#
COM3, 4 Ports Pin Definition
RS232
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
PWR
NC
18
Signal
Signal
PIN
PIN
PIN
Name
Name
4
DDTR#
6
DDSR#
8
3
TTXD
5
GND
7
RS422
RS485
TX-
RTX-
RX+
N/A
TX+
RTX+
RX-
N/A
GND
GND
N/A
N/A
N/A
N/A
N/A
N/A
PWR
PWR
There are two headers on this
motherboard. Each USB 2.0
header can support two ports.
Signal
Signal
PIN
Name
Name
CCTS#
10
NC
RRTS#
9
PWR
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