Plantronics Dolby 7.1 USB to Dual 3.5mm Jack Adapter                                    Part Number: Adapter-03 For Gamecom 777 or 780 Gaming Headsets Connect your analog PC Headset with Dual 3.5mm plugs to your Computer USB port to enjoy Dolby sound quality.Genuine Original Part. USA Seller Fast Shipping!Quality Friendly Service(if you need anything just ask)Thank you!