I have had the headset for some time now and have lost the dongle long ago. Now that they have the dongle up for sale I've got it again. The only thing is that it wont pair with synapse 3. I've also used a software for the paring made by Razer and my over all question is when it asked me to plug in the USB does it matter that its the Razer one or not because I cant get it to work without it and I've lost that cord and if that is the case where can I get the USB.