Smith Corona, GN Netcom/Jabra QD Compatible USB Connector Cord use on Computers Connects your corded Smith Corona Classic Series, Aries Plus and Ultra headsets to your computer via USB port Compatible with GN Netcom/Jabra QD headsets too Converts the headsets to USB headsets. One end has GN QD the other end has USB plug Mute, Volume controls on cord Comes with manufactures 1 year warranty. Contact Headset Solutions 888-888-9031 with any questions regarding compatibility