Chapter 2: Hardware installation
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EIH81-IHP User’s Manual
F_USB1/2: USB 2.0 Header
The mainboard provides USB 2.0 pin header.
F_USB1
F_USB2
2
1
10
9
Pin
Assignment
Pin
Assignment
1
+5V (fused)
2
+5V (fused)
3
USB -
4
USB -
5
USB +
6
USB +
7
Ground
8
Ground
9
KEY
10
NA
Serial Port Connectors & Headers
JCOM2/3/4: Serial Port Header
Pin Assignment
Pin Assignment
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
5V/12V*
10
NA
* Selected by Jumpers
JPC2/3/4: Serial Port Voltage Switch Jumper
1 3
Pin 1-2 Close: Pin9= 5V (default)
1 3
Pin 2-3 Close: Pin9=12V