AAEON EMB-H81A - Manual (Page 25)

2-17 Chapter 2: Motherboard information
2.9 Connectors
2.9.1 Rear panel connectors
2 3 4
7
4
8 9 2
5
6
1
10
1. PS/2 keyboard/mouse port (purple/green). This port is for a PS/2 keyboard
or mouse.
2. Serial ports (COM1 / COM2). These ports connect a modem, or other
devices that conform with serial specification.
3. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor
or other VGA-compatible devices.
NOTE: If you use VGA port only, please disable LVDS function. Refer to
section 3.4.1 System Agent (SA) Configuration for details.
4. LAN1 (RJ-45) port. These ports allow Gigabit connection to a Local Area
Network (LAN) through a network hub. Refer to the table below for the LAN1/
LAN2 ports LED indications.
Pin Signal Pin Signal
1 DCD (422TXD-/485DATA-) 2 RXD (422RXD+)
3 TXD (422TXD+/485DATA+) 4 DTR (422RXD-)
5 GND 6 DSR
7 RTS 8 CTS
9 RI/+12V/+5V 10 N.C.
NOTES:
• The COM module is purchased separately.
• Only COM1 can support RS-232 / RS-422 / RS-485.