Windows 10 can’t operate two Bluetooth radios at the same time. The Lenovo notebooks internal Bluetooth radio needs to be disabled in order to use the CSR 4 and probably any other USB Bluetooth Adapter. Nov 03, 2016 Adopted original CSR (Cambridge Silicon Radio) chip and CSR Harmony Driver, Bluetooth V4.0 Backward compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0 Extreme Low-Energy Mini USB Bluetooth 4.0 Adapter Dongle with Driver Installation CD Compatible with most Operating systems: Windows 98, 98se, Me, 2000, XP, Vista, win7/8/10.
![]() Cambridge Silicon Radio Bluetooth Windows 10 1Cambridge Silicon Radio Ltd. Bluetooth Driver Windows 10 DownloadMy PC runs 64-bit Windows 7. This adapter is OK, but if you are on Windows 7 or Win7 x64 like myself, it requires patience and some technical knowledge to make it behave properly. Initially I thought the dongle was defective - I had plugged it into a USB port on the chassis but the adapter would not detect. I moved it to an open port on a USB hub and then my PC detected it. Despite following the instructions on the included CD, the adapter would not properly pair my bluetooth headset. It would create an entry for the headset, but then would gray the entry out as if it had been turned off. I tried another headset from a different brand, and encountered the same problem. I tried other troubleshooting activities, rebooted the PC multiple times and became very frustrated. When I noticed that the adapter driver under Device Manager was 'Microsoft Generic Bluetooth' I got a hunch that the CSR drivers had not installed properly. I went back to the driver CD. Rather than running the SETUP.EXE in the root folder, I noticed there was a directory for 'x64'. Running the setup from there, I uninstalled the stack, rebooted, then ran the setup program from the x64 directory again. This time the adapter was marked as 'CSR Bluetooth Radio' and the driver showed Cambridge Silicon Radio Limited. Now I was able to successfully, properly pair my bluetooth headset and it properly shows as an available audio playback device.The range is decent, I'm able to go most of the way across my house before the signal starts to drop. For the price I paid I can't fault the hardware, it's the driver installation that made things difficult on my 64-bit Windows 7 install. Comments are closed.
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