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Front Panel Audio Header
A 10-pin front panel audio header located on the motherboard allows you to use the onboard
sound for audio playback. Connect an audio cable to the this header to use this feature. Refer
to the table below for pin definitions.
COM Ports
There are four COM ports (JCOM1: COM1/COM2 supports two RS232/RS422/RS485 and
JCOM2: COM3/COM4 supports two RS232) on the motherboard. Refer to the table below
for pin definitions.
Serial COM Ports (JCOM1)
Pin#
Definition
DCD1
1
or RS-485/422_COM1_TX- (Full Duplex)
or RS-485_COM1_Data- (Half Duplex)
RXD1
3
or RS-485/422_COM1_TX+ (Full Duplex)
or RS-485_COM1_Data+ (Half Duplex)
5
TXD1 or RS-485/422_COM1_RX+ (Full Duplex)
7
DTR1 or RS-485/422_COM1_RX- (Full Duplex)
9
GND
DCD2
11
or RS-485/422_COM2_TX- (Full Duplex)
or RS-485_COM2_Data- (Half Duplex)
RXD2
13
or RS-485/422_COM2_TX+ (Full Duplex)
or RS-485_COM2_Data+ (Half Duplex)
15
TXD2 or RS-485/422_COM2_RX+ (Full Duplex)
17
DTR2 or RS-485/422_COM2_RX- (Full Duplex)
19
GND
SATA Port
The X11SSN-H-WOHS/-E-WOHS/-L-WOHS has one SATA 3.0 port (I-SATA1).
Battery Connector
BT1 is a two-pin connector for an external CMOS battery. Refer to section 3.4 for battery
installation instructions. This connector is also used to clear the CMOS. To clear the CMOS,
remove the battery, short pins 1-2 for more than 10 seconds and then install the battery.
Audio Header
Pin Definitions
Pin#
Definition
1
Microphone_Left
3
Microphone_Right
5
Line_2_Right
7
Jack_Detect
9
Line_2_Left
Pin Definitions
Pin#
2
4
6
8
10
12
14
16
18
20
23
Chapter 3: Motherboard Connections
Pin#
Definition
2
Audio_Ground
4
Audio_Detect
6
Ground
8
Key
10
Ground
Serial COM Ports (JCOM2)
Definition
Pin#
Definition
DSR1
1
DCD3
3
RXD3
5
TXD3
RTS1
7
DTR3
9
GND
11
DCD4
CTS1
13
RXD4
RI1_N
15
TXD4
N/A
17
DTR4
DSR2
19
GND
RTS2
CTS2
RI_N2
N/A
Pin Definitions
Pin#
Definition
2
DSR3
4
RTS3
6
CTS3
8
RI3_N
10
N/A
12
DSR4
14
RTS4
16
CTS4
18
RI4_N
20
N/A
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