The Master Caddy Case for HDD / SSD (5 Pack) from ATOMOS is a set of 5 master caddies for the ATOMOS Ninja Video Hard Disk Recorder. The Master Caddy supports 2.5" SSD or HDD with 5400 to 10,000 rpm. It supports standard drives with a height of 0.37" (9.55mm) or slimmer. The hot-swappable Master Caddy Case does not require any connections. It makes all the connections itself by simply pushing the Caddy into the Ninja or the Docking Station. The Master Caddy Case includes four screws to secure to your HDD / SSD.