3.5mm stereo cables are cables used mainly for computer speakers, headphones, and microphones. 3.5mm stereo cables use a type of TRS connector, also called an audio jack, stereo plug, mini-jack, or mini-stereo. These connectors are typically used for connecting audio and telephony components and equipment.

3.5mm stereo cables and their TRS-connector counterparts have a variety of uses, including:

• Headphones / Speakers
• Microphone Input
• Line In
• Line Out

TRS connecters come in a variety of sizes, so it's important to get a cable with a 3.5mm stereo connector if you're audio component requires that size. If you're not sure if a 3.5mm stereo cable is right for your device, read the manual that shipped with your product or check your manufacturer's website.