
9Connector pin assignments
Audio-out  (headphone)
| Pin | Signal | 
| 
 | 
 | 
| 1 | Audio out, left channel | 
| 
 | 
 | 
| 2 | Audio out, right channel | 
| 
 | 
 | 
| 3 | Ground | 
| 
 | 
 | 
Audio-in  (microphone)
| Pin | Signal | 
| 
 | 
 | 
| 1 | Audio signal in | 
| 
 | 
 | 
| 2 | Audio signal in | 
| 
 | 
 | 
| 3 | Ground | 
| 
 | 
 | 

| Pin | Signal | 
| 
 | 
 | 
| 1 | Audio out, left channel | 
| 
 | 
 | 
| 2 | Audio out, right channel | 
| 
 | 
 | 
| 3 | Ground | 
| 
 | 
 | 
| Pin | Signal | 
| 
 | 
 | 
| 1 | Audio signal in | 
| 
 | 
 | 
| 2 | Audio signal in | 
| 
 | 
 | 
| 3 | Ground | 
| 
 | 
 |