Headset splitter

TRIPP LITE Eaton Tripp Lite Series 3.5 mm 4-Position to 3.5 mm 3-Position Audio Headset Splitter Adapter Cable (F/2xM) 6 in. (15.2 cm) -

StarTech Headset Adapter Microphone and Headphone Splitter - 3.5mm Male Aux to 3.5mm Female Audio & Mic Combo Jack Y Cable for Laptop / PC (MUYHSMFF)