The Broadcom 20702 Bluetooth 4.0 Adapter driver allows Windows to recognize the adapter and communicate with compatible Bluetooth devices. Installing the correct driver can help restore missing Bluetooth controls, resolve device detection issues, and support connections to accessories such as mice, keyboards, and headsets.

Key Features

• Bluetooth device communication: Provides the software interface Windows needs to use the Broadcom adapter for wireless pairing and data exchange.
• Accessory connectivity: Supports compatible Bluetooth peripherals, with available functions depending on the accessory, Windows version, and installed Bluetooth profiles.
• Bluetooth 4.0 functionality: Enables supported Bluetooth features, including low-energy communication where the driver package and operating system provide it.
• Driver maintenance: Replacing a missing, damaged, or mismatched driver may resolve adapter errors in Device Manager and improve connection reliability.

How to Install

1. Check your adapter and Windows version. Open Device Manager and look under Bluetooth or Other devices for the Broadcom 20702 Bluetooth 4.0 Adapter. Confirm whether your system runs Windows 11, 10, 8, or 7, and check its architecture before choosing a download.

1. Select a matching driver package. Use a package that explicitly supports your Windows release and adapter hardware ID. Broadcom-based adapters can be customized by computer and accessory manufacturers, so the chipset name alone does not guarantee compatibility. Older packages may not support Windows 11.

1. Download and extract the files. Save the driver to an easy-to-find folder. If it arrives as a compressed archive, extract it before installation. Keep your existing driver available in case you need to roll back.

1. Run the installer or update manually. If the package includes a setup program, run it and follow the prompts. Otherwise, right-click the adapter in Device Manager, choose Update driver, select Browse my computer for drivers, and point Windows to the extracted folder.

1. Restart and test a connection. Restart if prompted, turn on Bluetooth in Windows, and put an accessory into pairing mode. Pair it and check that it works as expected. If the adapter still shows an error, verify the hardware ID and driver compatibility rather than forcing an unrelated package.

For laptops and prebuilt PCs, a manufacturer-specific driver is often the best starting point because it may account for the system’s Bluetooth implementation and power-management settings.

Common Issues and Fixes

• Install fails or stalls: Run the installer as administrator, disconnect other Bluetooth devices, and temporarily disable antivirus. If it still fails, remove the existing Broadcom Bluetooth entry in Device Manager (enable Show hidden devices), reboot, then reinstall the OEM Broadcom 20702 driver.
• Adapter not detected: Check the USB/internal connection and scan for hardware changes in Device Manager. If it appears with a warning, uninstall it and restart. Disable USB selective suspend/power-saving for the Bluetooth radio, since this adapter may disappear after sleep.
• Version/driver conflicts: Windows may load a generic Bluetooth driver. Roll back or uninstall it, remove leftover Broadcom Bluetooth stack entries, reboot, and install the correct 20702 package. Avoid mixing newer Broadcom/Widcomm stacks with Windows inbox drivers.