Adapter, 3.5mm stereo jack to 3.5mm mono plug - Williams AV

Why doesn't my headphones microphone work? I found some old headphones in my house(2 jack:1 for mic and 1 for aud)so I got a splitter(my laptop only has 1 jack)but, the microphone

EODNSOFN Bluetooth 5.0 Audio Receiver APTX 3.5mm AUX 3.5 Jack RCA USB Wireless Adapter Dongle for TV PC Car Headphone Speaker (Size : with RCA Cable)

Williams AV EAR 022 Surround 32 Ohms Earphone, 3.5mm Mono Plug and 1m Cord

Disino 3.5mm to 1/4 inch Headphone Adapter, 1/4 inch Jack Male to 1/8 inch Female Mini Jack Stereo Adapter, Gold-Plated Pure Copper Aux Audio

Rear Wear Headset Mic MIC100 Willia

3.5mm plug

PACKAGE INCLUDES: 3 PCS Stereo Audio Adapter Converter. 6.35mm to 3.5mm AUDIO: This adapter is designed to connect your smartphones, tablets, iPod,

3 Packs Stereo Audio Adapter Converter, 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female Headphone Gold Plated Pure Copper Jack Plug for Guitar

Neckloop for T-Coil Switch Hearing Aids with Mono 3.5mm Plug

Williams AV NKL 001

3 5 Mm 4 Pole Jack

Mono Jack

Williams Sound NKL 001 Neckloop 18 Cord 3.5mm Mono Plug For Use With All FM, IR and Dig Wave Body Pack Receivers - GoKnight