Final answer:
A Bluetooth dongle enables wireless communication between a computer and Bluetooth devices. It's useful for computers without built-in Bluetooth or needing an upgrade. Whether you need one depends on your computer's current capabilities and your personal needs.
Step-by-step explanation:
A Bluetooth dongle is a small device that plugs into the USB port of a computer to provide Bluetooth functionality, allowing the computer to communicate wirelessly with other Bluetooth-enabled devices, such as headphones, keyboards, mice, and smartphones. A dongle can be useful if your computer does not have built-in Bluetooth capabilities or if you need to upgrade to a newer version of Bluetooth for better performance or range.
Whether you need a Bluetooth dongle depends on your specific hardware setup and requirements. If your computer already supports Bluetooth, you may not require an additional dongle. However, if you need to connect Bluetooth devices to a system that lacks these capabilities or wish to enhance its range or reliability, a dongle can certainly be beneficial.