New and High Quality! Feature: 1. Multi-Device Support: Connect multiple Bluetooth devices simultaneously, solving USB port limitations and catering to various needs. 2. Driver-Free for Win8 and Above: Plug and play functionality for Win8.1/10/11. Supports Win7 with driver installation. 3. Bluetooth Version Compatibility: Backward compatible with Bluetooth 4.1/4.2/5.1 versions. 4. Universal Compatibility: Connect wireless devices such as keyboards, mice, speakers, printers, gamepads, and more. 5. Compact and Lightweight: The Bluetooth 5.1 adapter is small, lightweight, space-saving, and easy to carry or store. Description: Transmission Rate: 3 (Mbps) Effective Working Radius: 10 (m) Bluetooth Standard: 5.1 Working Frequency: 2.4 (MHz) Material: ABS Plastic Color: As Shown Size: See Picture Package Includes: 1 PC Note: 1. Please allow 1-3mm error due to manual measurement. 2. Due to different computer displays, the actual product color may vary slightly from the picture.