Overview

This document serves as the user manual for the UGREEN Bluetooth 5.0 USB Adapter (Model CM390). It provides essential information regarding system requirements, installation procedures, troubleshooting common issues, and important usage notes.

A schematic diagram illustrates the internal connections of the Bluetooth adapter, showing power (VCC), data lines (D-, D+, USB_P+, USB_N-), and ground (GND) connecting to a USB interface.

Contents

• System Requirements
• Installation
• Verification
• Connecting Bluetooth Devices
• Troubleshooting
• Notes

System Requirements

• Operating Systems: Windows XP, Vista, 7, 8, 8.1, 10; macOS 10.6 to 10.15; Linux 2.6.31 to 5.11.
• Processor: Intel/AMD CPU above 1GHz.
• RAM: 1GB RAM or higher.
• Interface: Available USB 2.0 or USB 3.0 port.

Installation

1. Step 1: Connect the Adapter

   Plug the UGREEN Bluetooth 5.0 USB Adapter into an available USB port on your computer.

   A visual representation of the UGREEN Bluetooth adapter plugged into a computer's USB port.
2. Step 2: Install the Driver

   Insert the provided driver CD into your computer's CD-ROM drive. If your computer lacks a CD-ROM drive, download the latest driver from the official UGREEN website.

   Upon inserting the CD or running the installer, a 'Found New Hardware Wizard' dialog will appear. Select 'Install the software automatically (Recommended)' and click 'Next'.

   A dialog box from the Windows Found New Hardware Wizard, prompting the user to choose between automatic software installation or installation from a specific location.

   If a warning message appears stating that the software has not passed Windows Logo testing, click 'Continue Anyway' to proceed with the installation.

   A Windows dialog box warning that the software has not passed Windows Logo testing, with an option to 'Continue Anyway'.

   Once the installation is complete, a 'Completing the Found New Hardware Wizard' dialog will confirm the driver installation. Click 'Finish' to exit the wizard.

   A Windows dialog box confirming the successful completion of the Found New Hardware Wizard, indicating the driver installation is finished.

Verification

To confirm the adapter is installed correctly:

• Using Device Manager:

  Right-click on 'Computer' and select 'Manage'. In the Computer Management window, navigate to 'Device Manager' from the left pane. Expand the 'Bluetooth Radios' category. The UGREEN Bluetooth adapter should be listed here.

  A view of the Windows Device Manager, displaying a list of hardware categories, with 'Bluetooth Radios' expanded to show the installed Bluetooth adapter.
• Using System Tray:

  Look for the Bluetooth icon in your computer's system tray (usually near the clock). Double-clicking this icon will open the Bluetooth Devices window.

  The Windows system tray area, showing the Bluetooth icon, indicating that Bluetooth services are active.

Connecting Bluetooth Devices

1. Step 1: Add a Device

   In the Bluetooth Devices window, click the 'Add a device' button to start searching for nearby Bluetooth devices.

   The Windows Bluetooth Devices window, displaying an option to 'Add a device' to initiate the pairing process.
2. Step 2: Select and Pair

   From the list of detected Bluetooth devices, select your desired device and click 'Next'.

   A list of available Bluetooth devices detected by the system, ready for selection.

   Follow any on-screen prompts to complete the pairing process, which may include entering a passcode or confirming a code.

   A Windows dialog box for Bluetooth pairing, possibly showing a confirmation code or requiring user input to complete the connection.

Troubleshooting

Common Issues and Solutions

Q: The adapter is not recognized by the computer.

A: 1. Ensure the adapter is securely plugged into the USB port. 2. Try connecting the adapter to a different USB port. 3. Uninstall the current driver and reinstall it.

Q: Cannot find Bluetooth devices.

A: 1. Verify that your Bluetooth device is powered on and set to pairing mode. 2. Confirm the UGREEN adapter is installed correctly. 3. Move the Bluetooth device closer to the computer.

Q: Bluetooth connection is unstable.

A: 1. Minimize potential interference from other wireless devices like Wi-Fi routers or microwaves. 2. Ensure the adapter has a clear line of sight and is not obstructed. 3. Check the UGREEN website for the latest driver updates.

Q: Cannot pair with a Bluetooth device.

A: 1. Make sure the target device is not already connected to another computer. 2. Remove any previous pairing records for the device and attempt pairing again. 3. Restart both your computer and the Bluetooth device.

Q: Bluetooth audio is choppy or cutting out.

A: 1. Reduce the physical distance between the adapter and the Bluetooth audio device. 2. Close any unnecessary applications running in the background that might be consuming system resources. 3. Ensure your computer's audio drivers are up to date.

Notes

• This adapter supports Bluetooth 5.0 technology, offering backward compatibility with older Bluetooth versions (4.0, 3.0, 2.1, 2.0).
• For Windows 8 and Windows 10, the operating system might automatically install the necessary drivers. If this does not occur, please follow the manual installation steps provided.
• Ensure your Bluetooth device is in discoverable or pairing mode before initiating a search for devices.
• If you encounter persistent issues, consider restarting your computer or performing a clean reinstallation of the driver software.
• This adapter is primarily designed for data transmission and audio streaming.
• Compatibility with certain Bluetooth keyboards or mice, particularly those requiring proprietary drivers, may vary.
• UGREEN is not liable for any data loss or damage resulting from improper product usage.
• Please retain this manual for future reference.

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