Pinouts >  Headsets, Headphones, Handsfree - mobile phones and other equipment  >  PalmOne pinouts
3 pin stereo plug connector layout
3 pin stereo plug connector
for PalmOne Treo 650, Treo 700w, 750v, Tungsten T5, E2, TX, 680, LifeDrive and others?

+3V supplied to pin 3 in the standard configuration (left)

In extended configuration (rigth). Push switch to A for stereo listening. Push switch to B for phone calls. Capacitor keeps +3V from damaging earpiece. Some users reports that this capacitor not needed (and should be removed for correct function)

4 pin 3.5mm (2.5mm) plug connector layout
4 pin 3.5mm (2.5mm) plug connector
According to 5 reports in our database (0 positive and 2 negative) the PalmOne Treo headset schematic pinout may be incorrect.

Is this pinout
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