On some motherboards, the audio-in header is named as AUX or line-in.
For connecting to AUX 1x4 pins header, please read notes at the bottom of this page.
AUDIO-IN PORT INTERNAL
Black: Line-In Left / Audio-In L / L-In L / AUX L
The GND (ground) wire is fatter and can be easily recognized.
Diagram 1: On most motherboards, the pinouts of audio ports are grouped together. You need to find out which 3 pins are assigned as L-In L, L-In R and GND.
Diagram 2: Simply plug the connector onto the header/pin-out, in such that; black wire is connected to L-In L pin, red wire to L-In R pin and the ground wire to GND pin.
If the 3 active pins are not aligned in one same row (refer to diagram above), you need to change the header connector, and rearrange the wires to match with the pin assignments.
NC pin (no connection - empty) is not a GND pin. Do not connect the ground wire to NC pin.
On some motherboards, the audio-in header is by itself, i.e. not grouping with the headphone and microphone pinouts. This audio-in header is named as AUX, and consists of 4 pins arranged in 1 row.
To connect to the AUX header, you can use the 1x4 header connector which can be purchased at our webstore. Please note that there are 2 GND pins in this header, just connect the ground wire to either one of the 2 GND pins, and leave the other GND pin unconnected.
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