Introduction
The UGREEN USB Bluetooth 5.4 Adapter is designed to provide seamless wireless connectivity for your Windows PC. This compact dongle allows you to connect various Bluetooth-enabled devices such as speakers, headphones, mice, keyboards, game controllers, and smartphones, enhancing your computing experience with wireless freedom and efficient data transfer.
Featuring the latest Bluetooth 5.4 technology, this adapter offers improved stability, faster transmission speeds, and higher sound quality compared to older Bluetooth versions. It is backward compatible with Bluetooth 5.3, 5.1, 5.0, and 4.0 devices, ensuring broad compatibility with your existing peripherals.
Product Overview
The UGREEN USB Bluetooth 5.4 Adapter is a small, plug-and-play device that transforms your PC into a Bluetooth-enabled hub. Its advanced chip (ATS2851) ensures stable and low-latency connections.
Key Features:
- Upgraded Bluetooth 5.4 Technology: Offers more stable, faster connections and higher sound quality, addressing common issues found in older Bluetooth 5.0 versions.
- Backward Compatibility: Fully compatible with Bluetooth 5.3, 5.1, 5.0, and 4.0 devices.
- Plug & Play: Driver-free installation for Windows 8.1, Windows 10, and Windows 11 operating systems.
- Multi-Device Connectivity: Connect up to 5 different Bluetooth devices simultaneously, saving valuable USB ports.
- Extended Transmission Range: Enjoy wireless freedom with a transmission distance of up to 20 meters.
- Versatile Use: Ideal for wireless keyboards, mice, headphones, speakers, game controllers (PS4, Xbox One S and later), and for quick data transfer between your PC and smartphone.
- Compact and Portable: Small design with an anti-lost feature (e.g., keyring loop) for easy portability.
- Clear Indicative Status: An LED light indicates when the adapter is actively working.
Specifications
| Parameter | Value |
|---|---|
| Brand | UGREEN |
| Name | USB Bluetooth Adapter 5.4 |
| Model | CM591 (35058) |
| Bluetooth Version | 5.4 |
| Built-in Chip | ATS2851 |
| Transmission Distance | 20 meters |
| Bluetooth Profile | A2DP, H2DP, HSP, AVRCP, HID, etc. |
| Frequency Range | 2400MHz-2483.5MHz |
| Compatible System | Windows 8.1/ 10/ 11 |
| Package Size | 114mm*102mm*8mm |
| Product Net Weight | 4g |
| Weight with Package | 30g |
| Warranty | 1-year |
| Package | Ugreen retail box |
Setup and Installation
System Requirements:
- Operating System: Windows 8.1, Windows 10, or Windows 11.
- Available USB-A port.
Important Note:
- This adapter is designed for Windows PCs only. It does not work with Mac OS, Linux, car systems, TVs, or other non-Windows devices.
- Before installing, ensure any existing Bluetooth functionality on your computer is disabled and any previous Bluetooth drivers are uninstalled to prevent conflicts.
Driver Installation (Windows 8.1/10/11):
For Windows 8.1, Windows 10, and Windows 11, the adapter is generally Plug & Play, meaning drivers should install automatically upon connection. However, if automatic installation fails or you experience issues, manual driver installation may be required.
- Download Driver: If your PC does not have a CD drive or automatic installation fails, download the latest driver from the official UGREEN website. Search for "CM390" or "UB400" in the "Support" section.
Direct download link (as provided by seller, verify on official site): Bluetooth_5.0_Adapter_Installation.rar - Extract Files: Unzip the downloaded file (e.g., "UB400_Driver.zip").
- Run Installer: Navigate to the "Windows" folder within the extracted files and run "setup.exe". Follow the on-screen prompts to complete the installation.
- Restart PC: After installation, restart your computer to ensure the drivers are properly loaded.
Operating Instructions
Connecting Bluetooth Devices:
- Insert the UGREEN USB Bluetooth Adapter into an available USB-A port on your Windows PC.
- Once the driver is installed (automatically or manually), the Bluetooth icon should appear in your system tray. The adapter's LED indicator will light up when active.
- Enable Bluetooth on the device you wish to connect (e.g., headphones, mouse, keyboard).
- Put your Bluetooth device into pairing mode (refer to your device's manual for specific instructions).
- On your Windows PC, go to "Settings" > "Devices" > "Bluetooth & other devices" (or similar path depending on your Windows version).
- Click "Add Bluetooth or other device" and select "Bluetooth".
- Select your device from the list and follow any on-screen prompts to complete the pairing process.
Usage Scenarios:
- Wireless Keyboard and Mouse: Enjoy a clutter-free workspace for enhanced productivity and gaming.
- Audio Streaming: Connect Bluetooth headphones or speakers for high-quality audio output. Note: Music streams to only one audio device at a time.
- Gaming: Pair compatible game controllers (PS4, Xbox One S and later series) for a wireless gaming experience.
- Data Transfer: Easily transfer files between your PC and Bluetooth-enabled smartphones or other devices.
Troubleshooting
- Driver Installation Error:
If you encounter a driver error during installation, it might be due to a conflict with your computer's built-in Bluetooth. Disable any previous Bluetooth adapters or drivers first. For Windows 10, specifically disable "Intel(R) Wireless Bluetooth" in Device Manager before re-plugging the UGREEN adapter and attempting installation again.
Example of Device Manager, highlighting potential conflicting Bluetooth drivers. - Bluetooth Adapter Not Found/Cannot Search Devices:
After driver installation, if the adapter isn't recognized or cannot find devices:
- Restart your computer after installation.
- Ensure your Bluetooth device (headphones, keyboard, speaker) is not already connected to or occupied by another Bluetooth host.
- Compatibility Issues:
The UGREEN USB Bluetooth Adapter is designed exclusively for Windows 8.1, 10, and 11. It is not compatible with Mac OS, Linux, car systems, TVs, or other devices that lack the necessary driver support.
- Connecting Multiple Devices of the Same Type:
You can connect up to 5 different types of devices simultaneously. However, you cannot connect multiple devices of the exact same type (e.g., two pairs of headphones) for simultaneous audio output. Music streams to only one audio device at a time.
- Voice Call Support:
If your Bluetooth headset includes a microphone function, the adapter supports voice calls through that headset.
- Gaming Controller Latency:
While the adapter supports PS4, Xbox One S, and later series gaming controllers, all Bluetooth devices inherently have some latency (typically less than 250ms). For ultra-low latency and stability critical for competitive gaming, a wired connection or a dedicated 2.4G adapter is recommended.
- BLE Low-Energy Devices:
BLE (Bluetooth Low Energy) devices are not compatible with Windows 7 systems when using this adapter. However, they are supported on Windows 8.1 and later systems.
User Tips
- Always ensure your PC's built-in Bluetooth is disabled before installing the UGREEN adapter to avoid driver conflicts.
- For optimal performance, especially with audio, keep the adapter within the recommended 20-meter range and minimize obstructions.
- If experiencing connection issues, try restarting both your PC and the Bluetooth device.
- Remember that while multiple devices can be connected, audio will only play through one output device at a time.
Compliance and Safety
The UGREEN USB Bluetooth 5.4 Adapter has undergone rigorous testing and complies with international safety and environmental standards:
- CE: EU Security Conformity Marking
- FC: American Electronics Safety Certification
- RoHS: Environmental Certification
Warranty and Support
The UGREEN USB Bluetooth 5.4 Adapter comes with a 1-year warranty from the date of purchase.
For technical support, driver downloads, or further assistance, please visit the official UGREEN website or contact UGREEN customer service.
