I'd wanted one of these for a newly purchased SoundStation 2 EX sow we could use it in VOIP situations (skype, gotomeeting, webex), but it turns out the SS2EX came with one in the box, already! Unless you already have a SoundStation and/or lost the cable, you shouldn't need this. Availability seems limited (I checked dozens of sites), and is often unavailable. It's literally just a $2 cable (yes, cable markup is insane) -- you could cobble one together by hand if you wanted, but it's not worth the trouble.