Warm and friendly reminder: If your computer does not have a CD-ROM that can be read the driver, you can download the Bluetooth driver through the GAROGYI web URL, and the driver content is the same as that in the CD. web URL:dropbox.com/s/3ktdqbq7egr50ee/Rtl5.3%20Driver.zip?dl=0. ? USB 2.0 interface (compatible with USB 3.0). ? Fully backward compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0, Bluetooth 4.0, Bluetooth 5.0, Bluetooth 5.1, and other specifications. ? Ultra-low latency for lightning-fast connections, intelligent sleep and wake functions for energy efficiency, 24-bit CRC (Cyclic Redundancy Check) for interference resistance, and adaptive frequency hopping to reduce interference. ? Original manufacturer driver management software: The REALTEK driver management software is user-friendly, feature-rich, and supports various application program extensions. ? More stable transmission rate: Provides a transmission rate of 3Mbps, enabling high-speed file and audio data transfer. ? Longer transmission distance: Class 1 protocol allows for an ultra-long transmission distance of up to 100 meters (unobstructed) with a strong signal. ? It adopts the Taiwan Realtek 5.3 chip, fully compliant with the Bluetooth 5.3 technical specifications, supporting dual-mode low-power transmission. For Windows 11, 10, and 8.1, it's a plug-and-play experience—no drivers needed. However, Windows 7 might require driver installation in specific cases. Each system varies; typically, it's plug-and-play. If your system doesn't automatically detect the adapter, manual driver installation can help.? A courteous reminder: If your computer lacks a CD-ROM for driver installation, you can get the Bluetooth driver via GAROGYI's web URL:dropbox.com/s/3ktdqbq7egr50ee/Rtl5.3%20Driver.zip?dl=0. The GAROGYI 5.3 Bluetooth adapter is a new product known for its high version and fast speed. It offers strong compatibility, high-speed stability, and a longer reception range. It is compatible with popular operating systems such as Windows 7, Windows 8.1, Windows 10, and the latest Windows 11.This adapter enables wireless connections between your computer and Bluetooth devices—headphones, speakers, mice, keyboards, game controllers, smartphones, printers—for audio, data, and image transfer.