My laptop has a combo headphone jack. When I plug a 4-pin headphone/earphone, it works fine, but when I plug in a 3-pin microphone, it doesn't work and no audio comes out.
![Amazon.com: KINGTOP Headphone Splitter 3.5mm, Mic Audio Splitter, Headset Splitter Cable for Gaming Headset with Separate Audio Microphone Jacks (Not for 2 Headphones) : Video Games Amazon.com: KINGTOP Headphone Splitter 3.5mm, Mic Audio Splitter, Headset Splitter Cable for Gaming Headset with Separate Audio Microphone Jacks (Not for 2 Headphones) : Video Games](https://m.media-amazon.com/images/I/51sTsbZrWrL._AC_UF894,1000_QL80_.jpg)
Amazon.com: KINGTOP Headphone Splitter 3.5mm, Mic Audio Splitter, Headset Splitter Cable for Gaming Headset with Separate Audio Microphone Jacks (Not for 2 Headphones) : Video Games
![RiaTech Black - 3.5mm Audio Jack to Headphone Microphone Splitter Converter Adaptor Specially Design for Mobile Tablet and Laptop(Only 1 Input for Audio) : Amazon.in: Electronics RiaTech Black - 3.5mm Audio Jack to Headphone Microphone Splitter Converter Adaptor Specially Design for Mobile Tablet and Laptop(Only 1 Input for Audio) : Amazon.in: Electronics](https://m.media-amazon.com/images/S/aplus-media/sc/664370a6-7831-4da7-af8c-2a14fc79fe19.__CR0,0,4242,2624_PT0_SX970_V1___.jpg)
RiaTech Black - 3.5mm Audio Jack to Headphone Microphone Splitter Converter Adaptor Specially Design for Mobile Tablet and Laptop(Only 1 Input for Audio) : Amazon.in: Electronics
![I got a 3.5mm to USB-C adapter so that I can plug an external microphone into my 2021 Razer Blade 15 Advanced, but it's only detecting output, rather than a mic input. I got a 3.5mm to USB-C adapter so that I can plug an external microphone into my 2021 Razer Blade 15 Advanced, but it's only detecting output, rather than a mic input.](https://preview.redd.it/lbwzqa0dcgp71.jpg?auto=webp&s=1ee76acae82180e2db39a7b6d0143e190fa0c34d)