Notebook manufacturers are replacing the double micro mini jack connection + helmet headset with a single connector type on phones (it's a mania already that Windows 8 wants to look like my PC to my Android phone ...). However, like all non-micro USB headsets for PCs (excluding mini cell phone headsets) have a double connection jack, then the use of this adapter is compulsory. So it is surprising that this accessory necessary for many people, is also hard to find (besides the slogan on the packaging of this brand for this range of adapters is "hard to find"). Fortunately there has Amazon! The adapter works received. I have no further comment to make as this is all we ask! For the record it is stated that it is guaranteed for life.