How can I check if my laptop's 3.5mm audio port works with a microphone?

I am ordering a Logitech headset that has separate audio and mic connectors. My laptop only has one 3.5mm audio port.

How can I tell if my laptop audio port works with a microphone? I am in the process of purchasing an audio adapter to convert 2 inputs to 1 input for the laptop, but I need to check if the one on my laptop works with a mic.

Firstly, there's two competing, different pinouts. Apple compatible TRRS != the standard TRRS. The Android 'standard' is the more common one from what I can tell.

Secondly, look at the pictogram

indicates a combo jack

There's different pictograms for a audio out only port/mic port combo.

Finally if you've got good eyesight, a combo port should have 4 internal connectors, and a audio only one should have 3.

If you've bought the headset already and are going to buy an adaptor, an USB sound adaptor can help you avoid thinking about pinout differences. This is an example. I actually haven't used this particular product but there are so many products like this for very cheap price.

This product itself is a sound card, and as you see, it has separate audio and mic connectors for your new headset.

If you haven't finished your order to buy that Logitech headset, there is an even better product - a standalone USB headset like this Logitech one.

This one may seem to be expensive, but there are many cheaper alternatives like MS LifeChat LX-3000. This sort of products are also acting as sound cards. Using a Bluetooth headset is another good option as it doesn't take a port at all.

To sum up - if you haven't bought anything yet, buying a standalone USB headset or a Bluetooth one will eliminate all of your headaches. If you've bought a headset already, there's still a chance to buy a USB sound adaptor to avoid pinout investigation.