UGREEN CM749 Bluetooth Adapter and USB Dongle

Take wireless connectivity to an entirely new level with the UGREEN CM749 Bluetooth 5.4 USB Adapter. Featuring an advanced Bluetooth 5.4 chip with adjustable external antenna, it delivers an extraordinary barrier-free transmission range of up to 120 metres — leaving standard dongles far behind. Connecting up to 5 devices simultaneously with HIFI-quality SBC audio decoding at 44.1kHz, ultra-low latency, and enhanced anti-interference technology, it supports mice, keyboards, speakers, earphones, and game controllers with zero lag. Compatible with Windows 7/8.1/10/11 and certified CE, FCC, SRRC, TELEC, UKCA, and IC — the most capable Bluetooth dongle on the market.

• Bluetooth 5.4 Technology: Latest Bluetooth 5.4 chip delivers enhanced anti-interference, lower latency, and superior stability.
• 120-Metre Long Range: Adjustable external antenna achieves an extraordinary barrier-free transmission range of up to 120 metres.
• HIFI Sound Quality: SBC decoding with 44.1kHz audio sampling rate delivers crisp, clear, high-fidelity audio output.
• Connect 5 Devices Simultaneously: Pair and use up to 5 Bluetooth devices at the same time without any switching required.
• Adjustable External Antenna: Flexible antenna adjusts to suit any environment for maximum signal strength and coverage.
• Wide Backwards Compatibility: Fully supports Bluetooth 5.4, 5.3, 5.2, 5.1, 5.0, 4.2, 4.1, and 4.0 devices seamlessly.
• Plug and Play: Driver-free on Windows 10/11 — simply plug in and connect wirelessly within seconds, no setup needed.
• Fast Data Transmission: Rapid file, music, and picture transfer between connected Bluetooth devices at high speed.
• Ultra-Low Latency Gaming: Zero delay and zero screen freeze when connecting Bluetooth game controllers to your PC.
• Broad Protocol Support: Compatible with HSP, A2DP, AVRCP, HID, GAVDP, GATT, DID, PAN, and more protocols.

The UGREEN CM749 isn't just a Bluetooth dongle — it's a whole-building wireless solution. With a 120-metre adjustable antenna range, Bluetooth 5.4 chip technology, HIFI audio quality, and five simultaneous device connections, it comprehensively outclasses every standard USB Bluetooth adapter available. Whether you're building the ultimate wire-free workspace, gaming without lag, or streaming HIFI audio to Bluetooth speakers, the CM749 sets a new benchmark for what a Bluetooth adapter can achieve.

• Brand: UGREEN
• Model: CM749 (CM656)
• Colour: Black
• USB Interface: USB 2.0
• Bluetooth Version: 5.4
• Bluetooth Standard: Bluetooth 5.4 / 5.3 / 5.0
• Backwards Compatibility: Bluetooth 5.3, 5.2, 5.1, 5.0, 4.2, 4.1, 4.0
• Antenna Type: External — adjustable for maximum range
• Transmission Distance: Up to 20m (internal) / Up to 120m (external antenna)
• Operating Frequency: 2.400GHz – 2.4835GHz
• Simultaneous Connections: Up to 5 devices
• Audio: SBC decoding, 44.1kHz audio sampling rate — HIFI quality
• Bluetooth 5.3 Protocols: HSP, A2DP, AVRCP, DID, GAVDP, IOPT, PAN, HID
• Bluetooth 5.0 Protocols: HSP, A2DP, AVRCP, GATT, DID, GAVDP, DUN, IOP, ANU, SDP, HID
• Driver Required: Free driver for Windows 8.1 and above only; driver-free on Windows 10/11
• Compatible Systems (BT 5.3): Windows 8.1 / 10 / 11
• Compatible Systems (BT 5.0): Windows 7 / 8.1 / 10 / 11
• LED Indicator: White LED — stays on during active use
• Certifications: CE, FCC, SRRC, TELEC, UKCA, IC
• Origin: Mainland China