1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Yealink UH48 ANC USB Headset. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your user experience.
The Yealink UH48 ANC USB Headset is designed for professional communication, offering active noise cancellation, a noise-canceling microphone, and comfortable wear for extended periods. It is compatible with various communication platforms, including Zoom and Microsoft Teams.
2. Package Contents
Verify that all items are present in your package:
- USB Headset
- User Manual
- Protective Case
3. Product Features
The Yealink UH48 ANC USB Headset incorporates several features designed to enhance your communication experience:
- Crystal Clear Calls with Noise-Canceling Microphone: Equipped with advanced Environmental Noise Cancellation (ENC) technology, the microphone effectively filters out background noise such as barking dogs, crying children, television sounds, keyboard typing, household noise, and traffic. This ensures that only your voice is clearly heard during calls, making it suitable for remote work, call centers, Zoom, Teams, and customer service environments.
- Active Noise Cancellation (ANC): Features ANC to block out ambient sounds, providing an uninterrupted work environment in noisy locations like coffee shops, offices, or busy homes. Experience distraction-free calls and meetings.
- HD Audio & 30mm Speaker: Premium 30mm speakers deliver crystal-clear sound and high-fidelity audio, ideal for voice calls, virtual meetings, customer support, and music listening. The noise-canceling microphone ensures clear voice pickup.
- Plug-and-Play USB Connectivity: No drivers are needed. Simply connect via USB-A or the included USB-C adapter. The headset is fully compatible with Teams, Zoom, softphones, laptops, VoIP phones, PCs, and Macs.
- All-Day Comfort with Lightweight Design: Designed for extended wear, this headset features soft memory foam ear cushions and an adjustable headband for a comfortable fit. It is suitable for professionals requiring a reliable headset for long hours of use.



4. Setup Instructions
The Yealink UH48 ANC USB Headset is designed for simple plug-and-play operation.
- Connect the Headset: Locate an available USB-A port on your computer (PC, laptop, Mac) or VoIP phone. If your device only has USB-C ports, use the provided USB-C adapter. Plug the headset's USB connector into the appropriate port.
- System Recognition: Your operating system should automatically detect and install the necessary drivers. This process may take a few moments.
- Select as Audio Device: Once recognized, you may need to select the Yealink UH48 as your default audio input (microphone) and output (speaker) device within your computer's sound settings or your communication application (e.g., Zoom, Microsoft Teams, softphone).
- Adjust Fit: Adjust the headband and microphone boom for a comfortable and secure fit. Position the microphone approximately 1-2 inches from your mouth for optimal voice pickup.

5. Operating Instructions
Familiarize yourself with the controls on your Yealink UH48 headset for efficient communication.
5.1. Basic Controls
- Volume Control: Use the dedicated buttons on the headset's ear cup or inline controller (if present) to adjust the listening volume.
- Mute/Unmute Microphone: Press the mute button on the headset or rotate the microphone boom upwards to mute your microphone. Rotate it back down to unmute. A quick mute indicator light may show the microphone status.
- Play/Pause: A button on the headset may allow you to play or pause audio playback.
5.2. Active Noise Cancellation (ANC)
The ANC feature helps reduce ambient noise for improved focus.
- Activating ANC: Locate the ANC button on the headset and press it to activate or deactivate the active noise cancellation. An indicator light may confirm its status.
- Adaptive ANC: The headset features adaptive ANC, which adjusts noise cancellation levels based on your environment.
5.3. Busylight
The 360-degree busylight indicates your call status to others, minimizing interruptions.
- Automatic Activation: The busylight typically illuminates automatically when you are on a call or in a meeting.

6. Maintenance
Proper care and maintenance will extend the lifespan of your Yealink UH48 ANC USB Headset.
- Cleaning: Use a soft, dry cloth to clean the headset. For ear cushions, a slightly damp cloth with mild soap can be used, but ensure they are completely dry before use. Avoid harsh chemicals or abrasive materials.
- Storage: When not in use, store the headset in its protective case to prevent dust accumulation and physical damage. Avoid storing in extreme temperatures or high humidity.
- Cable Care: Avoid sharp bends or excessive pulling on the USB cable to prevent internal damage.
7. Troubleshooting
If you encounter issues with your Yealink UH48 ANC USB Headset, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from headset | Headset not selected as default audio output; volume too low; loose connection. | Check computer/application sound settings to ensure UH48 is selected. Increase volume. Reconnect USB cable securely. |
| Microphone not working | Microphone muted; headset not selected as default audio input; loose connection. | Ensure microphone is unmuted (check mute button/boom position). Select UH48 as default microphone in settings. Reconnect USB cable. |
| Background noise audible during calls | ANC not active; microphone not positioned correctly. | Activate ANC. Adjust microphone closer to your mouth (1-2 inches). Ensure microphone is not obstructed. |
| Headset uncomfortable after extended use | Improper fit; tension in headband. | Adjust the headband for a looser fit. Take short breaks during long usage periods. |
| Headset not recognized by computer | Faulty USB port; driver issue. | Try a different USB port. Restart your computer. Check for system updates. |
8. Specifications
Detailed technical specifications for the Yealink UH48 ANC USB Headset:
| Feature | Detail |
|---|---|
| Model Name | UH48 UC |
| Brand | Yealink |
| Connectivity Technology | Wired (USB-A, USB-C adapter included) |
| Headphones Jack | USB-C |
| Noise Control | Active Noise Cancellation |
| Microphone | Noise-Canceling |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 30 Millimeters |
| Frequency Range | 20 Hz - 20,000 Hz |
| Ear Placement | On Ear |
| Form Factor | On Ear |
| Control Method | Push Button |
| Compatible Devices | Laptops, Desktops, PC |
| Recommended Uses | Office Meetings, Business |
| Item Weight | 11.3 ounces |
| UPC | 841885125774 |
| Included Components | Protective Case, USB Headset, User Manual |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official Yealink support website. For purchases made through Amazon, you may also contact the seller, Yealink Direct Store, for assistance.