Template:Craftable The Medium Storage (or small storage, or storage rack) is an item you can craft in the Printer module, using 2 stacks of compound. It is available at the beginning of the game, no need to research it first.
It is composed of two panels, each with 4 resource slots. You can then store 8 stacks of resource or items that attach to a single slot.
You can not attach to a storage anything that require 2 or more adjacent slots (like the wind turbine, research items, or other storages).
The storage itself can be attached to any 2 adjacent slots, either on vehicles or on the side of modules.
When attached on the side of modules, the 2 panels flatten.
Do not mistake this Storage with the Vehicle Storage. Both have very different purpose, they are not the variant of the same item (as with battery for instance).