Antec NSK 4482B user manual AC’97/HD Audio Ports, Switch and LED Connectors

3.2 AC’97/HD Audio Ports

There is an Intel® standard 10-pin AC’97 connector and an Intel® 10-pin HDA (High Definition Audio) connector linked to the front panel of the case.

Pin Assignment for Audio Ports (HDA and AC’97)

106 4 2

9 7 5 3 1

Pin	Signal Names	Pin	Signal Names
	(HDA)		(AC’97)
1	MIC2 L	1	MIC In
2	AGND	2	GND
3	MIC2 R	3	MIC Power
4	AVCC	4	NC
5	FRO-R	5	Line Out (R)
6	MIC2_JD	6	Line Out (R)
7	F_IO_SEN	7	NC
8	Key (no pin)	8	Key (no pin)
9	FRO-L	9	Line Out (L)
10	LINE2_JD	10	Line Out (L)

You can connect either the AC’97 or the HDA connector depending on the model of the motherboard. Locate the internal audio connectors from your motherboard or sound card and connect the corresponding audio cable. Consult your motherboard or sound card manual for the pin-out positions. Even if your system supports both audio standards, you may only use one connector.

3.3 Switch and LED Connectors

Connected to your front panel are LED leads for power and hard disk activity and switch leads for power and reset. Attach these to the corresponding connectors on your motherboard. Consult your motherboard manual for specific pin header locations. Polarity (positive and negative) does not matter for switches. For LEDs, colored wires are positive ( + ). White or black wires are negative ( – ). If the LED does not light up when the system is powered on, try reversing the connection. For more information on connecting LEDs to your motherboard, see your motherboard manual.

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