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Digital I/O Output State
JP22
1
1
3
(JP20)
1
(JP18)
1
(JP17)
10
12
1
3
COM 4/DIO Select
(JP22, JP21)
Digital I/O 4-7 Output State
(JP18)
(JP21)
Digital I/O 0-3 Output State
(JP20)
10
12
Digital I/O Power Select
(JP17)
COM 4
COM 2
SATA 2.0
SATA 0
4
1
SATA Power
eMMC
(optional)
COM 1
Mini PCIe with LPC
iTE
IT8528E
MicroSD
(optional)
USB 5-7 Power
USB 0
Select (JP7)
USB 0
USB 3.0
Power
Select
(JP5)
DC-in
1
COM 5
1
1
10
from
Power board
Auto
Power-on
9
Select
(JP25)
HDMI
Power
Mini PCIe with SIM
JP20 (DIO pin 0-3) and JP18 (DIO pin 4-7) are used to select the state of DIO output: pull-
high or pull-low. When the pull-high state is selected, the level of the DIO signal will be the
same as the JP17's setting.
Chapter 4 Jumper Settings
JP20 (DIO 0-3)
JP18 (DIO 4-7)
1
Battery
COM 3
1
2
3
Buzzer
1
SPI
Clear CMOS
Flash
Data (JP24)
BIOS
1-2 On:
GND (default)
VGA
1
2
3
Mic-in
mSATA
Line-out
2-3 On:
USB 1
USB 2.0
+5V or +5V_standby
USB 2
USB 6
USB 7
USB 1-2
Power Select (JP6)
1
LAN 1
LAN 2
DC-in
Chapter 4
COM 4/DIO/CANbus Select
JP22
1
1
3
(JP20)
1
(JP18)
(JP17)
1
10
12
1
3
COM 4/DIO Select
Digital I/O 4-7 Output State
(JP21)
Digital I/O 0-3 Output State
Digital I/O Power Select
10
12
COM 4
COM 2
SATA 2.0
SATA 0
4
1
SATA Power
COM 1
Mini PCIe with LPC
iTE
IT8528E
USB 0
USB 0
USB 3.0
Power
Select
(JP5)
1
1
Auto
Power-on
Select
(JP25)
HDMI
Power
Mini PCIe with SIM
The system board uses JP21 and JP22 to select among serial port COM 4, 8-bit DIO or CAN-
bus on the front panel. For more information on installing a CANbus card, please refer to
Chapter 3 ̶
Installing
Devices.
Note:
You cannot use COM 4, DIO and CANbus at the same time. Please set up
JP21 and JP22 together.
16
1
JP22
4
1
Battery
JP21
7
(JP22, JP21)
(JP18)
10
(JP20)
COM 3
(JP17)
1-2, 4-5, 7-8, 10-11 On:
Buzzer
1
SPI
Clear CMOS
Flash
Data (JP24)
COM 4 (default)
BIOS
1
VGA
4
eMMC
7
(optional)
10
Mic-in
mSATA
Line-out
2-3, 5-6, 8-9, 11-12 On:
USB 1
USB 2.0
USB 2
MicroSD
(optional)
USB 6
1
USB 5-7 Power
Select (JP7)
4
USB 7
USB 1-2
Power Select (JP6)
DC-in
COM 5
1
1
from
10
7
Power board
9
LAN 1
10
No jumper: CANbus
LAN 2
DC-in
3
6
9
12
3
6
9
12
DIO
3
6
9
12
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