I've read a lot of threads about how there's a special 4-conductor 2.5mm adapter needed for stereo headsets... but what about the mono ones?
I'm interested in the Plantronics MX505 headset, which has only a 3-conductor 2.5mm jack. Anyone know of any 3-conductor 2.5mm jack will work, if only mono audio is desired? What do the headsets in the everythingQ store have?
Here's a picture of the jack:
http://ecx.images-amazon.com/images/...DL._SS500_.jpg