Antec NSK 1380 user manual Connecting the Audio Ports AC’97 and HDA, Hard Disk Drive Installation

			Motherboard Pin Layout
1	2
		Pin	Signal Names	Pin	Signal Names
		1	USB Power 1	2	USB Power 2
		3	Negative Signal 1	4	Negative Signal 2
		5	Positive Signal 1	6	Positive Signal 2
		7	Ground 1	8	Ground 2
9	10
		9	Key (No Connection)	10	Empty Pin

Connecting the Audio Ports (AC’97 and HDA)

There is an Intel standard 10-pin AC’97 connector and an Intel 10-pin HDA (High Definition Audio) connector. You can connect either the AC’97 or the HDA connector to your motherboard depending on the spec of the motherboard. If your motherboard supports Intel’s standard onboard AC’97 audio connector, you can plug the AC’97 connector directly into the board. If your motherboard supports Intel’s High Definition Audio, you can plug HDA onto the board. See instruction below:

106 4 2

9 7 5 3 1

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

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)

Locate the internal audio connectors from your motherboard or sound card. Consult your motherboard or sound card manual for the pin-out positions.

Hard Disk Drive Installation

The NSK1380 incorporates a rapid-release Flip Up Drive Cage for easy drive installation. The cage includes up to four drive bays: one external 5.25”, three internal 3.5”.

To install the external 5.25” device:

1.	Remove the flip-up drive cage.
2.	Insert the 5’25” device and align the	Picture 3

screw holes to the front set of holes on the cage. Fasten the drive with the screws included. (See Picture 3)

3