Using Computrainer with Zwift

I am trying to set up my computrainer and it sounds like I need a “FTDI USB to Stereo” adapter, whatever that is!

If you can help, I would greatly appreciate it.

Thanks,

Danny Boy

https://www.amazon.com/gp/offer-listing/B00S3EZCQM/ref=dp_olp_new_mbc?ie=UTF8&condition=new 

It plugs in from the head unit to your computer USB port.  Works great, I have a computrainer and have no problems.