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The Realtek Bluetooth 5.1 Adapter is a popular peripheral device designed to enable Bluetooth connectivity to your Windows 10 desktop or laptop. It is an external adapter that provides reliable and stable Bluetooth connectivity, especially for users who do not have Bluetooth pre-installed on their computers. The Realtek Bluetooth 5.1 Adapter Driver version 1.6.1015.3016 is the latest driver update for this device and was released in October 2018.

Features and Specifications

The Realtek Bluetooth 5.1 Adapter is backward compatible with earlier Bluetooth versions such as 4.2 and 4.0. It also has High-Speed Bluetooth protocol support for enhancements such as the 2× faster transmission speeds and up to 4 × broader operating range. Other key features and specification of the device include:
  • Bluetooth 5.1
  • Bluetooth Low Energy (BLE) Ready
  • LED signaling for operation mode
  • Dimensions: 14.8 × 6.5 × 18.32mm
  • Frequency: 2.4GHz
  • Range: Up to 30m
  • Max Data Rate: 3Mbps

Using Technologies

The Realtek Bluetooth 5.1 Adapter uses various technologies to enable smooth, stable and fast connectivity. These technologies include:
  • Bluetooth Low Energy (BLE)
  • Adaptive Frequency Hopping(AFH)
  • Blue Creation Version 3.3 firmware platform
  • Wideband speaker and microphone support
  • U HE AAC Codec support

Known Issues with This Device

Users of the Realtek Bluetooth 5.1 Adapter have sometimes reported erratic behavior from the device. These issues appear to affect the device more on computers with pre-existing Bluetooth support. The most common issues with this device include connectivity instability, difficulty in pairing or staying paired with other devices, and low audio quality during Bluetooth audio transfer.


If you encounter any issues while using the Realtek Bluetooth 5.1 Adapter, please try the below troubleshooting steps:
  1. Ensure that the driver is up to date
  2. Unplug and replug the device, or run the windows troubleshooter
  3. Scan for nearby Bluetooth devices from Windows by clicking "Settings" and "Devices" and then selecting "Bluetooth and other devices".
  4. Ensure wireless protocols and services such as World Wide Web Publishing Service, HTTP, and Bluetooth Support Service are enabled in windows settings, and all drivers are working correctly.
  5. Perform a system restore to a previous stable configuration before or after encountering the issue.

Realtek Bluetooth 5.1 Adapter Driver Information

The Realtek Bluetooth 5.1 Adapter Driver version 1.6.1015.3016 is the latest driver version for the device. The driver was released on October 2018 and is compatible with Windows 10 operating systems only. The driver package size is 6.31 MB and includes instructions for manual and automatic installation. Note that the driver would work only with Realtek Bluetooth 5.1 Adapter devices, and may cause problems if installed on non-compatible devices or the wrong operating system.