The Lenovo notebook’s internal Bluetooth radio needs to be disabled to use the CSR 4 and probably any other USB Bluetooth Adapter. Windows 10 can’t operate two Bluetooth radios at the same time. (Solved) CSR 4.0 USB Adapter Won’t Install Once that was done, I rebooted the computer and reinstalled the CSR Bluetooth adapter. Then in Windows Device Manager, I selected “Show Hidden Devices” and removed any additional Bluetooth devices that are no longer being used. My second thought was there was another device interfering with the installation, so I removed my iPhone, Sharkk Boombox, and Amazon Tap. My initial thought was that maybe there was a driver needed after all, but my research told me that the CSR 4 USB Bluetooth adapter does not require any driver other than what is included with the Windows 10 operating system. Here we go, a simple task is now a project.

A quick check-in Windows 10 device manager showed me the CSR 4.0 was installed, but there was an error message. Installing the CSR 4.0 USB Bluetooth Dongleīeing a Windows 10 computer, the Bluetooth adapter should have been plug and play, but unfortunately, that was not the case. My research on Amazon showed me that there were many USB Bluetooth 4.0 Dongles to choose from, and many seemed to be re-branded CSR 4.0, so I bought the one that was actually branded CSR 4.0 for about $12, and in two days, Amazon prime had it in my hands. Cambridge Silicon Radio CSR 4.0 USB Bluetooth Dongle I had to solve this problem once and for all.įrustrated, I headed to Amazon and set out to find a new Bluetooth 4.0 USB dongle. I recently had a renewed interest in training courses, so I bought an awesome set of Hiearcool L-1 Bluetooth Headphones.

Until a few days ago, I lived with this problem because it was not a big deal. Devices would stop working, and I would need to remove them from the system and add them again along with several other tap dances to keep things working. Unfortunately, the Bluetooth 3.0 on the Thinkpad was flaky. Life was good until about two years ago when I decided I wanted to regularly pair my Amazon Tap, Sharkk Boombox, and a pair of Jabra Bluetooth earbuds to the system. When it was new from the factory, I installed a Samsung 500Gb SSD to eliminate the weakest link, a Western Digital mechanical hard drive. I have an older Lenovo Thinkpad W520 notebook computer running Windows 10 Professional that, for the most part, has been an ultra-reliable workhorse.

Csr harmony bluetooth 5.0 driver