How do I safely eject DONGLE USB from my macbook pro?

Unlike other usb, there’s no eject button.
Can I just remove it?
Or should I eject it after entering sleep mode?

System : Macbook Pro 16 inch (Catalina OS 10.15.3)

Close down applications using the dongle.
Open Disk Utility App.
Select the dongle in the left-hand menu.
Click on the ‘Eject’ button at the top-right of the dialogue box.