If an external drive is not mounted yet but has it's visible light on is it safe to just unplug it from a usb hub without clicking anything?

If an external drive or a usb stick is not mounted yet but has it's visible light on is it safe to just to unplug it from a usb hub without clicking mount on the gui? At the bottom far lower right of my kde screen it says 'mount', but if I've changed my mind and want to just unplug it, is it safe to do so, instead of having to click mount then unmount.

It's connected to an unpowered usb hub i.e. gets it power from my computer. Thanks in advance.