Note! Many instructions for configuring the security key are written for USB devices and therefore you may come across the phrase "Insert your security key into a USB port". In the case of Hideez Key, you must press the button on the case.
Sign in to your Dropbox account with U2F
On the authorization page, enter your username and password in the usual way.
You can use the Hideez Key functionality to enter credentials if the corresponding account is created on it, or, you can use Hideez Key only for U2F and enter credentials manually.
To use only the U2F functionality, you only need the Hideez Key itself, without a dongle and specialized Hideez software.
On-screen you will see a request for checking if you have a security key - if Hideez Key is enabled, then nothing needs to be done. If it is not on, turn it on with a short press.