Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver

UGREEN Bluetooth 5.0 USB Adapter (CM390) , the driver can be downloaded directly from the official UGREEN Download Center by searching for product model Driver Installation Guide

Compatibility: Windows 7, 8.1, 10, and 11. Note: Apple devices are generally not supported for this specific model. UGREEN Bluetooth 5.0 USB Adapter CM390 User Manual ugreen bluetooth 5.0 usb adapter cm390 driver

1. Extract the driver ZIP to a folder (e.g., C:\Drivers\UGREEN\).
2. Plug in the UGREEN CM390 adapter.
3. Open Device Manager (Right-click Start button > Device Manager).
4. Look for an unknown device labeled “Bluetooth” or a yellow exclamation mark under “Universal Serial Bus devices” or “Other devices”.
5. Right-click the device > Update driver > Browse my computer for drivers.
6. Click Let me pick from a list of available drivers on my computer.
7. Click Have Disk > Browse.
8. Navigate to the extracted folder and select the .inf file (usually rtbtuart.inf or rtl8761b.inf).
9. Click OK > Next. Accept any warning about unsigned drivers (Windows 7/8 only; Windows 10/11 will accept Realtek’s signed driver).
10. Restart your PC.

| Use Case | Recommended Adapter | Why? | | :--- | :--- | :--- | | Windows 11 – Best All-Round | TP-Link UB500 (Bluetooth 5.0) | Uses same Realtek chip but with better antenna. Drivers on TP-Link site are updated frequently. | | Linux Native (no firmware hassle) | ASUS USB-BT500 | Mediatek chipset – firmware included in Linux kernel 5.7+. | | macOS / Hackintosh | Any Broadcom BCM20702-based dongle (e.g., IOGEAR GBU521) | Native support with BlueToolFixup. Realtek chips on macOS are a nightmare. | | Bluetooth 5.3 / LE Audio | UGREEN CM491 (Bluetooth 5.3) | Newer chip, better power efficiency, but still Realtek-based. | UGREEN Bluetooth 5

• Use the generic Realtek driver (auto-detects architecture).
• In Device Manager, uninstall the device, check “Delete driver software,” then reboot and let Windows Update try again.

The Ugreen Bluetooth 5.0 USB adapter CM390 is a small, compact device that plugs into a USB port on a computer or laptop. It uses the latest Bluetooth 5.0 technology, which provides a stable and fast connection to Bluetooth devices. The adapter supports a wide range of Bluetooth devices, including headphones, speakers, smartphones, and tablets. Extract the driver ZIP to a folder (e