Fonus Fo-FO09384E3P-513
Fonus USB-C to 3.5mm Audio Cable User Manual
Model: Fo-FO09384E3P-513
Introduction
This user manual provides comprehensive instructions for the Fonus USB-C to 3.5mm Audio Cable. Designed for seamless audio connectivity, this cable allows you to connect your USB-C enabled devices to any audio system equipped with a standard 3.5mm audio jack. Please read this manual carefully to ensure proper use and optimal performance of your cable.
Product Overview
The Fonus USB-C to 3.5mm Audio Cable is a high-quality audio accessory designed to bridge the gap between modern USB-C devices and traditional 3.5mm audio inputs. It features a durable braided design and incorporates a powerful DAC (Digital to Analog Converter) for superior sound quality.

Image: The Fonus USB-C to 3.5mm Audio Cable, displaying its USB-C connector on one end and the 3.5mm audio jack on the other, highlighting its direct connectivity.

Image: An illustration depicting the internal structure of the cable, emphasizing the high-purity oxygen-free copper core and oxygen-free copper encryption shield for stable and lossless sound transmission.
Key Features
- Universal Compatibility: Connects USB-C devices to any 3.5mm audio input, including car stereos, home stereos, headphones, and external speakers.
- High-Fidelity Audio: Built-in powerful DAC (Digital to Analog Converter) ensures stable, lossless, and high-resolution audio transmission up to 32bit/384KHz.
- Durable Construction: Features a braided cable design and reinforced connectors for enhanced durability and resistance to bending and fraying.
- Plug-and-Play: No drivers or additional software required for operation.
- Portable Design: Lightweight and easy to carry, ideal for on-the-go use.

Image: A close-up view of the cable's red nylon-braided shielding, illustrating its superior durability and tangle-resistant design.

Image: An illustration demonstrating the cable's robust construction, highlighting its ability to withstand over 10,000 bending tests and 4,000 swing tests, ensuring long-term reliability.
Specifications
| Brand | Fonus |
| Model Number | Fo-FO09384E3P-513 |
| Connector Type | USB Type C to 3.5mm Jack |
| Cable Type | Audio Cable |
| Compatible Devices | USB-C enabled smartphones (e.g., iPhone 16/Pro/Max/Plus), tablets, laptops, headphones, car stereos, home stereos, external speakers, and any device with a standard 3.5mm audio input. |
| Audio Quality | Hi-Res up to 32bit/384KHz |
| Special Features | Built-in DAC, Braided Cable, Lightweight, Reinforced Connectors |
| Color | Red |
| Item Weight | 1 ounce |
Setup
Setting up your Fonus USB-C to 3.5mm Audio Cable is a straightforward process. No software installation or external power is required.
- Identify Ports: Locate the USB-C port on your audio source device (e.g., smartphone, tablet) and the 3.5mm audio input (AUX-in) port on your audio output device (e.g., car stereo, headphones, speaker).
- Connect USB-C End: Insert the USB-C connector of the cable firmly into the USB-C port of your audio source device.
- Connect 3.5mm End: Insert the 3.5mm audio jack of the cable firmly into the 3.5mm audio input port of your audio output device.
- Verify Connection: Ensure both ends are securely connected to prevent audio interruptions or poor sound quality.

Image: A diagram illustrating the reinforced connectors of the cable, designed to strengthen stress points and prevent splitting, ensuring a secure and durable connection.
Operating Instructions
Once connected, the cable operates automatically. Follow these steps to enjoy your audio:
- Power On Devices: Ensure both your audio source device (e.g., phone) and audio output device (e.g., car stereo, speaker) are powered on.
- Select Input: On your audio output device, select the correct audio input source (e.g., "AUX," "Line-In," or "Audio Input"). Refer to your device's manual if unsure.
- Play Audio: Start playing audio (music, podcasts, videos) from your USB-C source device.
- Adjust Volume: Control the volume primarily from your audio output device. You may also adjust the volume on your source device.
Usage Scenarios:
- In Car: Connect your USB-C phone to your car's AUX-in port for music playback.
- At Home: Connect your USB-C tablet to a home stereo system or external speakers.
- With Headphones: Use with 3.5mm wired headphones that lack a USB-C connector.

Image: A visual guide showing common AUX port locations in a car, such as the center console, glove compartment, and central armrest box, demonstrating where the cable can be connected for in-car audio.

Image: A person smiling while listening to music through headphones connected to a smartphone via the Fonus USB-C to 3.5mm Audio Cable, emphasizing the high-fidelity audio experience (32-bit/384KHz).
Maintenance
Proper care and maintenance will extend the lifespan of your audio cable.
- Storage: When not in use, coil the cable loosely. Avoid tight coiling or sharp bends, which can damage internal wires.
- Cleaning: Wipe the cable and connectors with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Handling: Always grasp the connector housing when plugging or unplugging the cable. Avoid pulling directly on the cable itself.
- Environment: Keep the cable away from extreme temperatures, direct sunlight, and moisture.

Image: The Fonus USB-C to 3.5mm Audio Cable neatly coiled and secured with a white tie, demonstrating proper storage to prevent tangles and damage.
Troubleshooting
If you encounter issues with your Fonus USB-C to 3.5mm Audio Cable, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio output |
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| Static or distorted audio |
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| Cable not recognized by device |
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Warranty and Support
This product comes in bulk packaging and does not include a retail package. For specific warranty information or technical support, please refer to the purchase documentation or contact Fonus customer service directly through their official channels. Details regarding return policies are typically handled by the retailer where the product was purchased.
For further assistance, please visit the Fonus brand page on Amazon or contact your seller.
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