Headset connector, one plug or two?

[jhsachs]

This question seems dumb, but I haven't been able to find an answer on the manufacturer's site or the web.

Every modern computer I've ever used had a pair of 3.5mm connectors for sound: one for the speaker, one for the mic. I now have a laptop with a single 3.5mm connector. The icon next to connector shows a headset with a mic boom, so I assume it combines both channels.

What is this kind of connector called? I need to get a single-to-double adapter to attach my headset, but I don't know what to look for.

 

[popatim]

Thats a mobile (aka cellualr) jack
heres the 3.5mm: http://www.amazon.com/Headset-Buddy-Smartphone-Computer-Blackberry/dp/B002SK66OY/ref=sr_1_2?s=electronics&ie=UTF8&qid=1309287493&sr=1-2

heres the 2.5mm: http://www.amazon.com/Headset-Buddy-Adapter-PC35-PH25-Computer/dp/B002D41HKS/ref=sr_1_3?s=electronics&ie=UTF8&qid=1309287493&sr=1-3

 

[jhsachs]

That sure looks like the right part! Thank you.