Wireless keyboards connect to your laptop, desktop, or tablet without a cable. They can do this in 2 ways. There are wireless keyboards with a USB receiver or dongle that you put in the USB port of your device. There are also Bluetooth keyboards, so you don't need a USB dongle anymore. Keep in mind that your PC needs to have a Bluetooth function if you want to use a Bluetooth keyboard. With a wireless keyboard, you're not bothered by any cables and you get to enjoy more freedom of movement.