I have a headset that has two headphone jacks that are dedicated to audio and microphone that are both 3.5mm, my macbook has only has one place to insert jacks, what device should I use to merge the two inputs? I found something on walmart that seemed to be the thing I needed, but I need confirmation. http/www.walmart.com/ip/Link-Depot-AUDIO-ADT-1M2F-Link-Depot-3.5mm-Male-to-Female-Y-Adapter-Cable/15779607