SSD caddy needed?

Maybe this has been answered before, can't find a topic for it though.
Is a special BM caddy needed to mount the SSD drives into (like Atomos Samurai SSD caddies) or do they just go in there butt naked into the camera??
Is a special BM caddy needed to mount the SSD drives into (like Atomos Samurai SSD caddies) or do they just go in there butt naked into the camera??