UGREEN CM721

UGREEN USB C to 3.5mm Audio and Charger Adapter (Model CM721)

User Manual

1. Product Overview

The UGREEN USB C to 3.5mm Audio and Charger Adapter (Model CM721) is designed to expand the functionality of your USB-C devices, allowing for simultaneous audio output and fast charging. It integrates a high-performance DAC chip for superior sound quality and supports various fast charging protocols.

UGREEN USB C to 3.5mm Audio and Charger Adapter with DAC 32Bit/384KHz and PD 60W
UGREEN USB C to 3.5mm Audio and Charger Adapter (Model CM721)

Key Features:

  • Simultaneous Audio & Charging: Listen to music, make calls, or game while fast charging your device.
  • Hi-Res Audio: Built-in 32Bit/384KHz DAC chip for high-fidelity, lossless, and noise-free sound with an SNR of >110 dBFS.
  • PD 60W Fast Charging: Supports Power Delivery (PD3.0/2.0), Quick Charge (QC4.0/3.0), Galaxy AFC, Huawei SCP, and USB-C fast charging protocols.
  • Wide Compatibility: Compatible with a broad range of USB-C devices including iPhones (15 Pro Max/15 Pro/15 Plus/15), Samsung Galaxy (S24 Ultra/S23/S22 Ultra/S21/Note), Pixel (8/8 Pro/7/7 Pro/6/6 Pro), iPad Air/Pro, PS4/PS5/Switch, MacBook Air/Pro, XPS, and Huawei Mate 60 Pro.
  • Durable Design: Features a magnetic aluminum alloy case, strain relief, and nylon braided cable for enhanced durability and a 20,000+ bend lifespan.
  • Microphone & In-Line Control Support: Allows for voice input and control of audio playback and calls.

2. Setup and Connection

Follow these steps to connect your UGREEN USB C to 3.5mm Audio and Charger Adapter:

  1. Connect to USB-C Device: Insert the USB-C male connector of the adapter into the USB-C port of your smartphone, tablet, laptop, or gaming console.
  2. Connect Audio Device: Plug your 3.5mm headphones, earphones, speaker, or car stereo cable into the 3.5mm audio jack on the adapter.
  3. Connect Charger (Optional): For simultaneous charging, connect a USB-C charging cable from a compatible PD fast charger to the USB-C female port on the adapter. Ensure your charger and cable support PD fast charging for optimal performance.
Diagram showing USB-C device connected to adapter, with 3.5mm audio and USB-C charging ports in use.
Connect your USB-C device, 3.5mm audio, and USB-C charger simultaneously.

Note: This adapter does not support data transmission through its charging port.

3. Operating Instructions

Audio Playback:

Once connected, your device should automatically recognize the adapter and route audio through the 3.5mm jack. Adjust volume directly from your device or using in-line controls on your headphones if supported.

Woman listening to music with headphones connected via UGREEN adapter, showing Hi-Res Audio and SNR >110 dBFS.
Experience high-quality, lossless audio with the built-in DAC chip.

Charging Functionality:

When a compatible PD fast charger is connected to the adapter's USB-C female port, your device will begin charging. The adapter supports up to 60W Power Delivery, allowing for rapid charging even during intensive use like gaming.

Smartphone connected to UGREEN adapter and charger, displaying 60W fast charging. Icons for PD, QC, AFC, SCP, USB-C.
Enjoy PD 60W fast charging while listening to audio.

Microphone and In-Line Control:

The adapter supports microphones and in-line controls found on most 3.5mm headsets, enabling you to take calls, adjust volume, and manage playback directly from your headset.

Person using a smartphone with the UGREEN adapter, showing support for microphone and line control.
Supports microphone and in-line controls for seamless communication and media management.

Product Demonstration Video:

This video demonstrates the UGREEN USB C to 3.5mm Audio and Charger Adapter in use, highlighting its audio, charging, and gaming capabilities, as well as its magnetic design.

4. Maintenance and Care

To ensure the longevity and optimal performance of your UGREEN adapter, please follow these maintenance guidelines:

  • Keep Clean: Regularly wipe the adapter with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive materials.
  • Avoid Extreme Conditions: Do not expose the adapter to extreme temperatures, humidity, or direct sunlight.
  • Handle with Care: Despite its robust design, avoid excessive bending, twisting, or pulling on the cable and connectors.
  • Proper Storage: When not in use, store the adapter in a cool, dry place. The magnetic design allows for convenient and tangle-free storage.
Close-up images showing the robust and durable design features of the UGREEN adapter, including magnetic case, strain relief, and nylon braided cable.
The adapter features a robust and durable design with a magnetic case, strain relief, and nylon braided cable for extended lifespan.

5. Troubleshooting

If you encounter issues with your UGREEN adapter, refer to the following common problems and solutions:

  • No Audio Output:
    • Ensure the adapter is fully plugged into your USB-C device.
    • Verify that your 3.5mm audio device (headphones, etc.) is securely connected to the adapter.
    • Check your device's audio settings to ensure output is directed to the adapter.
    • Test with another 3.5mm audio device to rule out a faulty headset.
    • Ensure your USB-C device supports audio output via its USB-C port.
  • No Charging:
    • Confirm that the USB-C charging cable and PD adapter are securely connected to the adapter and a power source.
    • Verify that your charging cable and PD adapter are functional and support fast charging.
    • Ensure your USB-C device supports PD fast charging.
    • Try using a different charging cable or PD adapter.
  • In-Line Controls/Microphone Not Working:
    • Ensure your 3.5mm audio device has working in-line controls and a microphone.
    • Check your device's settings for microphone input and audio control permissions.
  • Compatibility Issues:
    • Refer to the compatibility table in the specifications section to ensure your device is supported.
    • Some devices may require specific drivers or firmware updates.

If the problem persists after trying these solutions, please contact UGREEN customer support.

6. Specifications

FeatureSpecification
Model NumberCM721
Brand NameUGREEN
TypeExternal
Interface TypeUSB-C (Input), 3.5mm Audio (Output), USB-C PD (Input)
DAC Chip32Bit/384KHz
Signal-to-Noise Ratio (SNR)>110 dBFS
PD Fast ChargingUp to 60W (PD3.0/2.0, QC4.0/3.0, Galaxy AFC, Huawei SCP, USB-C)
Data TransmissionNot Supported (via charging port)
MaterialMagnetic Aluminum Alloy Case, Nylon Braided Cable
Cable Lifespan20,000+ bend lifespan
Dimensions (Approx.)Length: 6.3 inches (16 cm), Width: 1.1 inches (2.8 cm)
PackageYes

Compatibility:

Compatibility chart for UGREEN USB C to 3.5mm Audio and Charger Adapter, listing various phone, tablet, and laptop models, and audio devices.
Wide compatibility with various USB-C devices and 3.5mm audio equipment.
BrandModelChargingMusicMicrophoneIn-Line Control
iPhone15 Pro Max/15 Pro/15 Plus/15
GalaxyS24 Ultra/S23 Ultra/S22 Ultra
Pixel8/8 Pro/7/7 Pro/6/6 Pro
iPadiPad Pro 2022/2021, iPad Air 4/5
MacBookMacBook Pro 2023/2022, MacBook Air 2022/2021
XPS17/15/13
HUAWEIMate 60 Pro

Supported Audio Devices: Earphones, Headphones, Speakers, Car Stereo.

7. Warranty and Support

UGREEN is committed to providing high-quality products and excellent customer service. Your UGREEN USB C to 3.5mm Audio and Charger Adapter (Model CM721) comes with the following assurances:

  • Free Returns: Enjoy free returns within 90 days of purchase.
  • Fast Delivery Guarantee: If delivery is delayed, you may be eligible for a $1.00 coupon code. Refunds are also available if the package is lost or items are damaged during transit, or if no delivery occurs within 30 days.
  • Security & Privacy: UGREEN ensures safe payments and protects your personal details, not sharing them with third parties without your consent.

For further assistance, technical support, or warranty claims, please contact UGREEN customer service through the official UGREEN website or your point of purchase.


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