These are all the mods you have downloaded. You will see a bunch of folders with numbers.
To get to where Steam hid the mods click the Up Arrow in the upper left to move up twice until you are in the steamapps folder. To locate where Steam stores the mods it downloaded follow these steps: Non-workshop mods are installed the exact same way on the server as on your computer simply use the File Manager on the left side of your panel to access the server's mods folder and upload the mod files. There are two ways to get workshop mods for your server.
How Do I Install Mods On My Starbound Server?
