Summary: The only reason I rated this as 3 stars is because I have problems when I plug it directly into my desktop motherboard. I think it must be a power issue (so it could be the motherboards fault) because when I plug it into a powered usb hub, it works great. It also might have some issues with the microsoft gaming mouse I use but I am not sure of that yet (weird things like left click every once in a while that was not initiated by me).
Pros: Added features, Comfortable, Easy To Use, Great Sound Quality, Quality Microphone
Summary: For all readers, dont buy this or any of the other plantronics 367,377 because they are uncomfortable as hell! clamp my ears to my head feels like its being squished, very heavy aswell so the top of my head hurts aswell from the weight of the headphones and pretty much headaches allover(afetr about 1hr!). Plus it has a very ugly design. Not worth the buy!
Summary: I upgraded to these my old pair got wrecked by accident. I got these and in win7 they worked right off as default onboard HD connector hooked up to a Creative X-fi extreme Audio PCI-E card. The card had an Audigy chip not amused but it works finally after setup was done properly. It has the chip on the flexi jack wire. Everyone says these are not working properly, well look at your drivers and settings in windows 7 it has a couple ways to do this.