VIA EPIA-M920 User Manual
10
2.1.3.
COM Port
The integrated 9-pin COM port uses a male DE-9 connector. The COM (COM1) port supports the RS-232
standard. The pinouts of the COM port are shown below.
Figure 9: COM port diagram
Pin
Signal
Pin
Signal
1
DCD
6
DSR
2
RxD
7
RTS
3
TxD
8
CTS
4
DTR
9
RI
5
GND
Table 5: COM port pinouts
2.1.4.
Gigabit Ethernet Port
The integrated 8-pin Gigabit Ethernet port is using an 8 Position 8 Contact (8P8C) receptacle connector
commonly known as RJ-45. The pinouts of the Gigabit Ethernet port are shown below.
Figure 10: Gigabit Ethernet port diagram
Pin
Signal
1
Signal pair 1+
2
Signal pair 1-
3
Signal pair 2+
4
Signal pair 3+
5
Signal pair 3-
6
Signal pair 2-
7
Signal pair 4+
8
Signal pair 4-
Table 6: Gigabit Ethernet port pinouts
Each Gigabit Ethernet port has two individual LED indicators located on the front side to show its
Active/Link status and Speed status.
Active LED
(Left LED on RJ-45 connector)
Link LED
(Right LED on RJ-45 connector)
Link Off
Off
Off
Speed_10Mbit
Flash in Green color
Off
Speed_100Mbit
Flash in Green color
The LED is always On in Green color
Speed_1000Mbit
Flash in Green color
The LED is always On in Orange color
Table 7: Gigabit Ethernet port LED color definition