All i know, was that my bluetooth dongle was detected as a csr 8510 a10 device in windows 7, with the wording csr v4.0 and bluetooth v4.0 on the box that came with it. The usbbt1edr4 usb adapter unboxing and more. Connect the bluetooth adapter to an available usb port, if the found new hardware wizard appears on the screen, cancel. 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 day amazon prime had it in my hands. #TOSHIBA CSR 4.0 BLUETOOTH DRIVER INSTALL#īluetooth 4.0 dual-mode micro usb adapter 58 pages adapter targus acb20us install manual. This mini usb bluetooth version 4.0 adapter with high speed transfer rate, simple pairing 's a simple solution to enable your computer connect with smartphone, tablet or other bluetooth ble with most laptops and pc's, quick and simple setup!Ī xiaomi bluetooth 4 0 dongles to class 1.