ASRock A55 Pro manual I/O Panel, LAN Port LED Indications

1.4 I/O Panel

1	PS/2 Mouse Port (Green)		7	USB 2.0	Ports (USB45)
* 2	LAN	RJ-45 Port	8	USB 2.0	Ports (USB01)
3	Line	In (Light Blue)	9	DVI-D Port
** 4	Front Speaker (Lime)		10	D-Sub Port
5	Microphone (Pink)		11	PS/2 Keyboard Port (Purple)

6USB 2.0 Ports (USB23)

* There are two LED next to the LAN port. Please refer to the table below for the LAN port LED indications.

LAN Port LED Indications

ACT/LINK SPEED

Activity/Link LED

Status	Description
Off	No Link
Blinking	Data Activity
On	Link

	SPEED LED
Status		Description
Off		10Mbps connection
Orange		100Mbps connection
Green		1Gbps connection

LED LED

LAN Port

**To enable Multi-Streaming function, you need to connect a front panel audio cable to the front panel audio header. Please refer to below steps for the software setting of Multi-Streaming.

For Windows® XP:

After restarting your computer, you will find “Mixer” tool on your system. Please select “Mixer

ToolBox” , click “Enable playback multi-streaming”, and click “ok”. Choose “2CH” or

“4CH” and then you are allowed to select “Realtek HDA Primary output” to use Rear Speaker and Front Speaker, or select “Realtek HDA Audio 2nd output” to use front panel audio. Then reboot your system.

For Windows® 7 / VistaTM:

After restarting your computer, please double-click “Realtek HD Audio Manager” on the system tray. Set “Speaker Configuration” to “Quadraphonic” or “Stereo”. Click “Device advanced settings”, choose “Make front and rear output devices playbacks two different audio streams simultaneously”, and click “ok”. Then reboot your system.

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