Certified for use on Windows operating systems, the Jabra GN 8110 USB to RJ9 gives distortion-free, CD-quality sound for your PC-based voice applications. Now is the time to dramatically improve the performance of your PC voice application! As a true plug-and-play Adaptor, there's no software to install. You Just plug your GN Netcom brand DECT cordless headset into the Adaptor, and plug the Adaptor into your PC's USB port. You get clean, distortion-free digital audio. Connect your DECT Cordless GN Netcom headset directly to your PC's USB port and bypass potential sound card compatibility issues.