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2.5mm stereo to 3.5mm stereo extension / conversion cable Note: This product is a generic product and has a very common wiring specification, but some audio manufacturers have a unique wiring for headphones and other audio devices and are considered a special standard for non-external products. For that reason, audio may not be able to pass through even with the same appearance 0.1 inch (2.5 mm) or 0.1 inch (3.5 mm) plugs. Please make sure to check whether the wiring of your device is a general specification when considering it.