To see what you have accomplished, narrow and widen your column. You will see that multiple rows will appear as needed. Now enter a sentence in the cell and use a magnifying glass to see how small you can make the font. I use that technique in address lists where I need to enter someone's e-mail address. It does not make sense to widen everything where there are only a few instances of long addresses.
All new computers seem to have one or two USB ports.
I have seen ads about devices such as drives and scanners that plug into those sockets and do not need to be connected to a separate 120 volt outlet. This is great for people like me who travel with a laptop. The introduction of the USB, or Universal Serial Bus, has been a great advance in computing. As you state, some peripherals need only a single cable. My experience with them has been very good.