For downloading Bluetooth CSR 4.0 dongle setup, you can visit various websites that offer free download for Windows. Your PC will then automatically detect your Bluetooth device and develop a connection.
As the PC identifies the connected dongle, you will need to turn on the Bluetooth-enabled device to connect it. It works by plugging it into the port of USB on the PC so that it can handle all the Bluetooth devices like mouse, printers, speakers, and keyboard to transmit data.
CSR Bluetooth Dongle is a USB device that functions to receive and transfer signals of wireless Bluetooth.