The fact that it IS a dongle is the major disadvantage. Most laptops have only one or two USB-B slots and many are moving towards USB-C for everything. Most also have very functional bluetooth built in. It's just not worth a minor improvement in connection quality (which is debatable, reading these comments) to lose the only slot I have in a laptop. I have to unplug my external keyboard in order to use my headset if I'm not using a dock. This was enough to make me spend my own money to replace the logitech mouse I was issued at work.