The UGREEN CM591 is designed to bring Bluetooth functionality to computers that do not have built-in Bluetooth. It works by plugging directly into a USB port, after which your PC can connect to wireless devices.

This adapter is especially useful for desktops or older laptops. It allows you to connect headphones, speakers, keyboards, and other accessories without cables. As a result, it improves convenience and reduces clutter on your desk.

It uses Bluetooth 5.3 technology, which offers better speed, lower power consumption, and improved connection stability compared to older versions.

Key Features

• Bluetooth 5.3 technology for faster and more stable connections
• Plug-and-play support for Windows systems (no drivers needed for newer versions)
• Supports multiple device connections at the same time (up to several devices)
• Compact nano design that does not block other USB ports
• Low energy consumption with BLE support
• Strong anti-interference performance in crowded wireless environments

Performance and Functionality

The UGREEN CM591 delivers reliable wireless performance for everyday use. It allows smooth audio streaming, stable input for keyboards and mice, and quick pairing with devices.

Because it uses Bluetooth 5.3, it improves transmission efficiency and reduces signal drops. This makes it suitable for environments with many wireless devices.

The adapter also supports connecting multiple devices at once. For example, you can use a wireless mouse, keyboard, and headphones simultaneously without interference.

Its typical range is around 10 meters, depending on obstacles and environment.

Compatibility

The adapter is mainly designed for Windows systems, including Windows 11, 10, and 8.1.

It works with a wide range of Bluetooth devices such as:

• Wireless headphones and speakers
• Keyboards and mice
• Game controllers
• Smartphones and tablets

👉 Important: It may not support macOS, Linux, TVs, or gaming consoles directly.

Build Quality and Design

The UGREEN CM591 features a very small and lightweight design. You can leave it plugged into your laptop without removing it.

This nano size is ideal for portability and prevents blocking nearby USB ports. In addition, it is durable enough for everyday use at home or in the office.