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.
|PalmOne Tungsten C Pin||
|1||Speaker +||Earspeaker (Mono) +|
|2||Microphone +||Microphone (and Button over 48E, and also a Diode)|
|3||Speaker -||Earspeaker (Mono) -|