SD was immediately recognized by the Freebox Revolution for its total capacity (2 TB, finally a little less because space is taken by system files).
No problem then view photos and videos on my TV wifi, read access is immediate.
Write access will not be tried faster, but for my part I think it is quite correct.
The on / off button is a plus for me because I did not need to have access to the DD every day, otherwise it goes to sleep if we do not cut it.