I am not sure of the model, it is a Logitech. Instead of the band sitting on top of your head, this one goes around the back of your neck. Here is what they look like: http://www.logitech.com/repository/246/jpg/1624.1.0.jpg
Sorry I didn't mention this earlier but it does have 2 3.5mm connectors, one for the headphone and the other for the mic. I have tried using the onboard sound as well and it does the same thing. And for some reason, it will not work at all when I plug them into the front audio ports.
It seems that the mic does work in game but I can not hear anybody else talk back to me. Don't know if that is a problem on my end or the game's end. Also I can not hear the game sounds right either. For example, in BFBC2, whenever you lose a base or take control of a base, the game will tell you but I can not hear it, can't hear people being spotted either. I can hear gun fire if I am close enough.
I just bought a usb desktop mic mainly for the fact that I don't like to wear headphones to much and so I don't have to unplug the speakers all the time.