Move Steam Library?

For me, my laptop is my desktop replacement. Since I only play games at home, to save internal memory, I have an external hard drive on my docking station, on which the games are stored. With previous changes to new hard drives, I simply made a copy of the old one and then inserted it into the same USB slot as the old one so that the letter E remains and Steam recognizes it as my library.

But my now ordered SSD runs via USB-C and will therefore need a different slot. The letter will then no longer be E either. Now how can I copy my Steam library so that it is recognized by Steam without having to download everything again?

You can simply assign the same drive letter to the disk in "Disk Management". Then it doesn't matter where you put it on, it always gets this letter.

You can simply copy the entire Steam folder to the new SSD and then set in Steam that this folder is also a Steam library. You can set multiple libraries in Steam settings.

I don't think at all. You can, but if you move in your Steam Biblo ----> right click on a game -------> properties --------> local data -------> move game files click to move the game to another hard drive.