![](/images/backgrounds/288858/hp-hp-elitebook-2540p-notebook-pc-wz226utaba-users-manual-546816145x1.png)
8 Connector pin assignments
1394
Pin | Signal |
|
|
1 | TPB- |
|
|
2 | TPB+ |
|
|
3 | TPA- |
|
|
4 | TPA+ |
|
|
Pin | Signal |
|
|
1 | Audio signal in (microphone) / audio out, left channel |
| (headphone) |
|
|
2 | Audio signal in (microphone) / audio out, right channel |
| (headphone) |
|
|
3 | Ground (microphone) / ground (headphone) |
|
|
1394 135