Ugreen 5.3 Bluetooth Adapter – CM591 (UG-90225)

The UGREEN 5.3 Bluetooth Adapter (CM591 / UG-90225) is a compact USB-A device that brings the latest Bluetooth 5.3 connectivity to Windows computers. Designed for seamless wireless communication, it enables your PC or laptop to connect effortlessly with Bluetooth-enabled peripherals such as headphones, speakers, keyboards, mice, and game controllers. With support for up to seven simultaneous devices, extended 20-meter transmission range, and high-speed data transfer of up to 3 Mbps, this mini adapter ensures stable, low-latency performance. Its plug-and-play functionality for Windows 11/10/8.1, combined with a durable ABS design and built-in LED indicator, makes it a convenient and reliable solution for modern wireless setups.

Product Features

Latest Bluetooth 5.3 Technology

Supports Bluetooth 5.3 with EDR (Enhanced Data Rate) and BLE (Bluetooth Low Energy), offering improved connection stability, reduced power consumption, and backward compatibility with previous Bluetooth versions.

Multi-Device Support

Connect up to seven Bluetooth devices simultaneously without interference, ideal for busy workstations or multi-peripheral setups.

Extended Transmission Range

Provides a reliable wireless connection up to 20 meters (66 feet) in open space, ensuring flexibility in device placement.

High-Speed Data Transfer

Delivers enhanced data transfer rates up to 3 Mbps, allowing smooth streaming of audio and rapid file transfers.

Plug & Play for Windows

Requires no additional drivers for Windows 11/10/8.1, making setup effortless. Note: Windows 7, macOS, Linux, and earlier versions are not supported for plug-and-play.

Compact Mini Design

Miniature form factor allows it to remain plugged into laptops or desktops without obstructing adjacent USB ports, perfect for portability.

Built-In LED Indicator

A white LED flashes during pairing and remains solid when connected, providing a visual confirmation of status.

High-Quality Audio and Auto-Reconnect

Supports A2DP, HSP, AVRCP, HID, PAN, GAVDP, DID, and IOPT profiles for lossless, low-latency audio streaming. Automatically reconnects to previously paired devices for convenience.

Enhanced Interference Resistance

Optimized to maintain a stable connection in crowded wireless environments operating in the 2.4 GHz frequency band.

Product Specifications

• Product Model: UG-90225 / CM591
• Bluetooth Version: 5.3 + EDR + BLE
• Chipset: ATS2851
• Interface: USB 2.0 (USB-A male)
• Data Transfer Rate: Up to 3 Mbps
• Transmission Range: Up to 20 meters (66 feet)
• Frequency Band: 2.402–2.480 GHz
• Simultaneous Connections: Up to 7 devices
• System Compatibility: Windows 11/10/8.1 (Plug & Play)
• Dimensions: 3.3 cm × 1.7 cm × 0.8 cm (1.3″ × 0.63″ × 0.3″)
• Weight: 10 grams (0.35 oz)
• Material: ABS Plastic
• LED Indicator: White LED for working status
• Power Supply: USB powered