USB Adapter Bluetooth-Compatible 5.3 Wireless Transmitter Receiver Plug and Play for Desktop PC Wireless MouseAudio Receiver Transmitter Feature: 1. Advanced Technology: The USB Bluetooth-Compatible Adapter uses the Taiwan Realtek RTL8761BW chip, which meets the Bluetooth-Compatible 5.3 technical specifications and supports dual-mode low power transmission, fully compatible with Bluetooth-Compatible 2.0, 2.1, 3.0, 4.0, 5.0, and 5.1. 2. Longer Transmission Distance and Stable Speed: With a long transmission distance of 10-20m (without barriers) and a strong signal, the adapter supports a 3Mbps transfer rate, making it perfect for high-speed file, audio, and data transfer. 3. Original Driver Management Software: The Realtek driver management software is easy to use and powerful, supporting multiple application program extensions, providing convenience for users. 4. Low Latency and Fast Connection: With ultra-low latency and intelligent sleep/wake up function, the adapter conserves energy while resisting interference with a 24-bit CRC check to reduce interference. 5. Portable and Widely Compatible: The USB 2.0 interface is portable and universal, and the small size makes it convenient for travel. Also, it supports various operating systems and devices, including Windows 7, 8.1, 10, and 11, making it possible for wireless audio, image, and data transfer between computers and other Bluetooth-Compatible devices such as headphones, speakers, mice, keyboards, gaming controllers, phones, printers, etc. Specification: Model: RTL801 Bluetooth-Compatible: 5.3 Color: Black Transmission distance: 20m (in an accessible environment) Transmission rate: 3Mbps Chip: RTL8761BW Supported protocols: A2DP/HSP/AVRCP/HID and other protocols Product size: about 27 * 14 * 8.5mm/1.06 * 0.55 * 0.33inch Packaging size: about 135 * 105 * 15mm/5.31 * 4.13 * 0.59inch Gross weight: 28g 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 adapter 1 x Drive disc 1 x Instruction manual