18
User's Manual |KS-SD
Chapter 4
COM1/COM2 RS232/422/485 Select
1-3, 2-4 On:
RS232 (default)
JP6 (for COM1) / JP13 (for COM2)
RS485
COM1 / COM2
1-2 On: RS232
(default)
1
3
5
2
4
6
RS422
Full Duplex
3-4 On: RS422
Full Duplex
5-6 On: RS485
RS232
2
1
9
RXD
DCD TXD
DT
R
GND
DSR
RT
S
CTS
RI
2
1
9
RXD-
RXD+ TXD+
TXD-
NC.
NC.
NC.
NC.
NC.
2
1
9
D
ATA
-
D
ATA
+
TXD
NC.
NC.
NC.
NC.
NC.
NC.
2
1
9
COM1/COM2:
RS232/422/485
COM1/COM2:
RS232/422/485
JP5 and JP12 (for COM1) / JP7 and JP14 (for COM2)
These jumpers allow you to configure the serial COM ports to RS232, RS422 (full duplex) or
RS485. JP5, JP6 and JP12 are used to configure serial COM port 1. JP7, JP13 and JP14 are
used to configure serial COM port 2. The pin functions of COM port 1 and COM port 2 will vary
according to these jumpers’ settings.
Both COM1 and COM2 are wired as either external ports or internal connectors. You can also
configure the RS485 auto flow mechanism through the BIOS setup utility. For more informa-
tion, refer to Chapter 7.
Note:
When COM1 RS232/422/485 is selected, JP5 and JP12 must be set in accordance to
JP6. And when COM2 RS232/422/485 is selected, JP7 and JP14 must be set in accor-
dance to JP13.
COM1 / COM2
RS422
Full Duplex
RXD+
TXD+
RXD-
TXD- N.C.
1 2 3 4 5
6 7 8 9
N.C. N.C. N.C. N.C.
Buzzer
USB 3-4
USB 3.0
USB 1-2
USB 3.0
Power LED
HDD LED
J22
JP2
JP3
J21
HDMI (default)/DP
DVI
System
Fan 2
1
Front
Panel
5
1
1
1
1
1
4
SATA Power
-
DC-in
LAN 2
LAN 1
PCIe x16 (PCIE1)
SPI Flash
BIOS
9
1
2
10
COM 4
VGA
1
6
(JP4)
Clear CMOS
Data (JP1)
Auto Power-on
Select (JP11)
1
6
(JP9) (JP16)
1
6
6
1
(JP8) (JP15)
1
6
6
1
(JP10)
1
2
10
COM 3
1
(JP6)
6
6
9
1
2
10
COM 2
9
1
2
(JP7) (JP14)
6
6
1
2
1
2
10
COM 1
9
1
2
16
LPC
1
2
14
4-pin DC-out
1
1
2
3
4
PCIe x4 (PCIE2)
Power Button
Reset
DDR4_2 SODIMM
DDR4_1 SODIMM
1
(JP5)
6
6
1
1
1
6
6
2
2
2
6
1
4
STB_LED
2
25
26
Parallel
1
DIO Power
DIO
S/PDIF
Front Audio
2
5
1
1
10
9
ECX
+
SATA 3.0
(JP13)
1
1
(JP12)
1
SATA 0
SATA 1
1
Mini PCIe
mSATA
System
Fan 1
1
1
bettery
1
1
1
2
12
USB 2.0
9
COM 2
COM 1
JP5, JP12
or
JP6
6
4
2
5
3
1
2
4
6
1
3
5
5
3
1
6
4
2
3-5, 4-6 On:
RS422 Full Duplex/RS485
6
4
2
5
3
1
6
4
2
5
3
1
JP7, JP14
JP13
COM2:
RS232/422/485 Select
1
3
5
2
4
6
COM1:
RS232/422/485 Select
RS232
1 2 3 4 5
6 7 8 9
DCD (or
+12V)
TXD
RXD
DT
R
GND
RT
S
RI (or
+5V)
DSR
CTS
RS485
D
ATA
+
D
ATA
-
1 2 3 4 5
N.C.
N.C.
N.C.
N.C. N.C. N.C. N.C.
6 7 8 9
