My 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.
  1. Cambridge Silicon Radio Bluetooth Windows 10 7
  2. Cambridge Silicon Bluetooth Driver
  3. Cambridge Silicon Radio Ltd. Bluetooth Driver Windows 10 64 Bit

Cambridge Silicon Radio Bluetooth Windows 10 7

Find helpful customer reviews and review ratings for ZEXMTE Bluetooth USB Adapter CSR 4.0 USB Dongle Bluetooth Receiver Transfer Wireless Adapter for Laptop PC Support Windows 10/8/7/Vista/XP,Mouse and Keyboard,Headset at Amazon.com. Read honest and unbiased product reviews from our users. Sep 13, 2015  CSR Bluetooth Dongle Windows 10 Created: Sep 13 2015.Note you may have to start your system with the bluetooth already plugged in to get it to show up. Email me if you like rodwarrix@gmail.com and let me know if it works. This is up to date as of April 4 2016.

Cambridge Silicon Bluetooth Driver

Scan performed on 4/25/2017, Computer: Fujitsu PRIMERGY RX100 S6 - Windows 7 64 bit

Outdated or Corrupted drivers:9/21

Cambridge Silicon Radio Ltd. Bluetooth Driver Windows 10 64 Bit

Device/DriverStatusStatus DescriptionUpdated By Scanner
Motherboards
Microsoft AMD DRAM and HyperTransport(tm) Trace Mode ConfigurationCorrupted By Cambridge Silicon Radio Ltd. Bluetooth
Mice And Touchpads
ELAN PS/2 Compatible MouseCorrupted By Cambridge Silicon Radio Ltd. Bluetooth
Usb Devices
SafeNet HASP HL 3.25Corrupted By Cambridge Silicon Radio Ltd. Bluetooth
Motorola USB Composite DeviceUp To Date and Functioning
Sound Cards And Media Devices
ESS ESS Maestro2E PCI AudioDrive (WDM)Up To Date and Functioning
Creative Port jeu pour CreativeCorrupted By Cambridge Silicon Radio Ltd. Bluetooth
Network Cards
Silicon Integrated SiS191 1000/100/10 Ethernet DeviceUp To Date and Functioning
Keyboards
Microsoft Keyboard Device FilterCorrupted By Cambridge Silicon Radio Ltd. Bluetooth
Hard Disk Controller
Advanced Micro Devices ATI IDE ControllerCorrupted By Cambridge Silicon Radio Ltd. Bluetooth
Others
Texas Instruments Texas Instruments PCI-4510 CardBus ControllerUp To Date and Functioning
NEC Generic CardBus ControllerOutdated
Texas Instruments Texas Instruments PCIxx21 Integrated FlashMedia ControllerUp To Date and Functioning
Intel USB-IF USB 3.0 HubUp To Date and Functioning
Texas Instruments MasselagringskontrollerOutdated
ENE ENE CB-1410/851 Cardbus ControllerUp To Date and Functioning
Cameras, Webcams And Scanners
Realtek Realtek USB2.0 PC CameraUp To Date and Functioning
Video Cards
Intel(R) HD GraphicsUp To Date and Functioning
Input Devices
Wacom Virtual Keyboard InterfaceUp To Date and Functioning
Port Devices
Huawei HUAWEI Mobile Connect - USB Device (COM32)Up To Date and Functioning
Monitors
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIAOutdated