Universal Female RJ9 Adapter to 3.5mm male PC Audio and Microphone Jack

This universal Female RJ9 adapter with male double 3.5mm audio jack connect different wiring code RJ9 headsets to dual 3.5mm audio jack.It can quickly connect the RJ9 headset to the PC, and you don’t need to worry about the wiring code of the headset you have. By simply slide the switch to the right position, you’ll be able to hear the dialtone and start to use.