PDA connectors and cables 4-Connector Jack on PalmOne’s Tungsten C. Speaker is Mono. Connect Micro direct to Pin 2 and 4, and also a Button in Line with a 48 Ohm Resistor.
4 pin 3.5mm
(2.5mm) plug connector at the PalmOne Tungsten C
| PalmOne Tungsten C Pin | Name | Description |
|---|---|---|
| 1 | Speaker + | Earspeaker (Mono) + |
| 2 | Microphone + | Microphone (and Button over 48E, and also a Diode) |
| 3 | Speaker - | Earspeaker (Mono) - |
| 4 | Ground | Ground, 0V |