Amazon.com: Speedlink Headset Adapter HQ 4-Pin 3.5 mm Jack Plug to 2 x 3.5 mm Jack Microphone and Audio – Black: Computers & Accessories
StarTech.com 4 Position Microphone and Headphone Splitter – 3.5 mm – 4 Pin / 4 Pole – Mic and Audio Combo Splitter Cable (MUYHSMFFADW), White | Pricepulse