USB Adapter 3MbpsBluetooth-Compatible 5.3Audio Receiver Support Windows 7/win8.1/win10/11 System for Desktop PC Wirele MouseFeature:1. High-Speed Bluetooth-Compatible 5.3:This adapter is a new high-speed product with strong compatibility, stable connectivity, and long-range reception. It supports Windows 7/8.1/10/11 operating systems and enables wirele connections for various Bluetooth-Compatible devices such as headphones, speakers, mice, keyboards, gamepads, smartphones, printers, and more.2. High-Quality Chipset:This adapter uses Realtek RTL8761BW chipset, which meets the latest Bluetooth-Compatible 5.3 technology standards. It supports dual-mode low-power transmiion with enhanced stability and reliability.3. Extended Transmiion Range:With a transmiion range of up to 10-20m (without obstacles), this adapter provides powerful and stable signals for seamle audio and file transfer.4. Original Drive Management Software:The Realtek driver management software is easy to use, feature-rich, and compatible with various applications.5. Wide Compatibility and Portable Design:This adapter is fully backward compatible with Bluetooth-Compatible 2.0, 2.1, 3.0, 4.0, 5.0, and 5.1 protocols. Its USB 2.0 interface is widely compatible with different operating systems, and its compact size makes it a portable solution for your audio and file transfer needs. It also features low latency, intelligent sleep/wakeup modes, 24-bit CRC checksum to resist interference, and adaptive frequency hopping to reduce interferences from other wirele devices.Specification:Model: RTL810Bluetooth-Compatible version: Bluetooth-Compatible 5.3Transmiion distance: 20 meters (in an acceible environment)Support protocols: A2DP, HSP, AVRCP, HD, etcPackaging size: 110 * 90 * 12mm/4.33 * 3.54 * 0.47inchProduct size: 25 * 17 * 8mm/0.98 * 0.66 * 0.31 inchGro weight: 25g Note: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 x USB adapter1 x CD disc1 x Instruction manual