Higher-tier stations allow you to craft more things: for example, you can craft Ore Drone I (a low-tier item) even at the most basic Machining Table, but Ore Drone II (more advanced item) requires Auto-Assembler. Upgraded station can craft anything the lower-tier station could, so if you want to craft Ore Drone I, you can still do so at the Auto-Assembler.
Press "Upgrade" button in top-right of your crafting station