Today we test the Icy Dock FlexCage MB973SP-1B removable frame. Homeserver or self-built or finished NAS solutions are gaining popularity again. Almost all finished network attached storages have so-called hot-swap bays, which makes it easy to change the hard disks. But what if the performance of a NAS is not sufficient, but you don’t want to do without the comfort of the hot-swap bays? Many consumer cases or 19-inch cases in the lower price segment only have internal 3.5-inch and additional external 5.25-inch slots. Since you rarely need optical drives in home servers, these drive bays are ideal for installing an Icy Dock FlexCage removable frame.