ECS A790GXM-A, Manual, Page: 28 / 88

24
Installing the Motherboard
Connecting I/O Devices
The backplane of the motherboard has the following I/O ports:
PS2 Mouse Use the upper PS/2 port to connect a PS/2 pointing device.
PS2 Keyboard
Use the lower PS/2 port to connect a PS/2 keyboard.
VGA1 Port Connect your monitor to the VGA port.
USB Ports Use the USB ports to connect USB devices.
LAN Ports
Connect RJ-45 jack to the LAN ports to connect your
computer to the network.
HDMI Port Connect the HDMI port to the HDMI devices.
Serial Port
Use the COM port to connect serial devices such as mice or
(COM1) fax/modems.
This jack connects to external optical digital audio output
devices.
Optical SPDIF
Output
Audio Ports
Use the audio jacks to connect audio devices. The C port is
for stereo line-in signal, while the E port is for microphone
in signal. This motherboard supports audio devices that cor-
respond to the A, B and D port respectively. In addition, all
of the 3 ports, B, and D provide users with both right & left
channels individually. Users please refer to the following
note for specific port function definition.
The above port definition can be changed to audio input or
audio output by changing the driver utility setting.
A: Center & Woofer D: Front Out
B: Back Surround E: Mic_in Rear
C: Line-in -