User Manual

Chapter 1
6
A990FXM-A USER MANUAL
I/O Ports
1. PS/2 Mouse and PS/2 Keyboard combo connector
Use this PS/2 port to connect a PS/2 mouse or a PS/2 keyboard.
2. USB 2.0 Ports
Use the USB 2.0 ports to connect USB 2.0 devices.
3. LAN Ports
Connect an RJ-45 jack to the LAN port to connect your computer to the Network.
4. USB 3.0 Ports
Use the USB 2.0 ports to connect USB 3.0 devices.
5.
Optical SPDIF Output
This jack connects to external optical digital audio output devices.
6. 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 de-
vices that correspond 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.
LAN LED Status Description
OFF No da ta
Orange blinking Active
OFF No link
Green Link
Activity LED
Link LED
Link LED
LAN Port
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: Ba ck Surround E: Mi c_i n Rea r
C: Line-in -