Specifications Brand UGREENModel CM749Name USB bluetooth 5 4 AdapterUSB Version USB 2 0 compatible with USB 3 0 bluetooth Version 5 4Built in Chip BR8654A02Transmission Distance 120m no blocking in single direction bluetooth Profile A2DP HFP AVRCP HID HOGP PAN GAP OPPFrequency Range 2 4GHz 2 48GHzCompatible System Supports Windows 7 8 1 10 11 Windows 7 driver needed Max RF Output Power 4dBm conducted Supply Voltage DC 5V ±0 25VFeatures 1 bluetooth 5 4 Technology Ensures lower latency increased stability and faster data transfer rates providing exceptional Hi Fi sound quality 2 Wide Compatibility Supports Windows 7 8 1 10 and 11 making it a versatile choice for various PC systems 3 Extended Transmission Distance Capable of transmitting wireless signals up to 120 meters without obstructions 4 Multiple Device Connection Ideal for seamless integration with wireless mice keyboards headphones and audio receivers 5 Simple Plug and Play Compatible with USB 2 0 and 3 0 without requiring additional drivers except for Windows 7 facilitating ease of use Package Includes 1 x UGreen CM749 bluetooth 5 4 Adapter