COMFAST B05 DC 5V USB Wirele Music Audio Dongle Adapter External Bluetooth-compatible 5.1 Receiver for Desktops NotebookFeature:1. Equipped with a high-performance upgraded Bluetooth-compatible 5.1 chip, the transmiion speed is faster, the connection distance is longer, and the data transmiion is more stable.2. Innovative peripheral high-gain omnidirectional antenna, stronger transmiion signal and longer transmiion distance.3. For Win8.1/10/11 is free of drive, just plug it in and use it (support for Win7, need to install the driver).4. High-fidelity lole transmiion, enjoy CD-level stereo, delicate and pure sound quality.5. The external antenna enhances the signal, realizes 30 meters barrier-free transmiion, and covers the whole house.6. Support simultaneous connection of Bluetooth-compatible devices to meet the needs of multi-device intercommunication.Specification:Model: CF-B05Bluetooth-compatible version: 5.1Frequency range: 2.4GHz (2402-2480MHz)Rated voltage: DC 5VInterface type: USBOperating system: for Win7 / Win8.1 / Win10 / Win11Product size: 174*19*12.5mmNote:For Mac/Linux/Windows XP is not supported.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1*USB Bluetooth-compatible adapter