CSR4.0 USB 2.0 Bluetooth 4.0 Adapter Driver / CSR Harmoney Wireless Software Stack v.V4.0, v.2.1.60.0 Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Cambridge Silicon Radio has been known worldwide for many years. Please note that the last official driver update was released on February 23, 2012. You can be sure that this driver is compatible with various operating systems, including Windows XP, Vista, 7, 8, 8.1, and 10. On our website, you can download the official CSR4.0 driver for the USB 2.0 Bluetooth 4.0 adapter, as well as the CSR Harmony Wireless Software Stack completely free of charge. The file size is only 408 MB. After downloading, simply open the installation file and start installing it on your computer. If, despite using our drivers, you encounter difficulties setting up the hardware, leave a comment — we will be happy to help you. All files we offer for download undergo thorough virus checks and are absolutely safe for your device. If errors occur while working, please take screenshots of them — this will help us provide more accurate support.

Q&A

How long has Cambridge Silicon Radio existed?
Cambridge Silicon Radio has had international recognition for many years.
When was the last driver update made?
The official driver update was carried out on February 23, 2012.
Is this driver supported by modern Windows systems?
Absolutely, this driver is compatible with operating systems such as Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, and Windows 10.
Where can I download the CSR4.0 driver?
You can download the official CSR4.0 USB 2.0 Bluetooth 4.0 Adapter Driver / CSR Harmony Wireless Software Stack for free from our website.
What is the size of the driver I want to download?
The driver size is only 408 MB.
What should I do after downloading the driver?
After downloading, you just need to run the installation file and follow the on-screen instructions to install the program on your computer.
What should I do if I encounter problems during installation?
If you were unable to set up the hardware using our drivers, leave a comment, and we will be happy to help you solve the problem.
How can we be sure the drivers are safe?
All files we provide undergo thorough manual virus checks, so you can be sure they are safe for your device.
What information is useful to provide if an error occurs?
We recommend taking screenshots of the error so that we can provide you with more accurate help in resolving it.

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