j'ai contacté le support Corsair voici la réponse "The case Air 740 you bought is the old stuff that was not manufactured anymore, we also don't have the i/o panel for Air 740 so that can't fulfill your request. If you still have the needs for the specific item, the unit could be found via the E-shop such as Amazon, E-Bay...etc."
Donc je fais des recherches via les divers sites, pour avoir des avis sur le sujet. Merci