"Tools->USB Type" Question

Hello! Sorry if this is the wrong Category to post this in. I didn't see one that was just "Arduino IDE". My question is about what functional changes happen based off of the "Tools->USB Type" menu selection on the Arduino IDE. I have been looking all over for any documentation about this menu option and I can't find anything other than a few projects just telling you to select a specific one.

For example, if I choose one of the options without "serial" in it, do I lose the capability to use the serial monitor, or does it only affect what the device appears to be if I plug it into a computer? If I choose one of the options that has "mouse" as well as "keyboard", do that just allow it to function as either of those devices, or is it more like a header or a name that tells the computer it is plugged into that "I am a keyboard/mouse", but it doesn't change the functionality of the Arduino?

Sorry if that's a confusing question. Basically, what does the "Tools->USB Type" option affect?

Thanks!

Well, which IDE version do you have?

Thanks for the response! I am using Arduino 1.8.16 with Teensyduino 1.55

Welp. Looked at the Teensyduino page and found the "USB type" documentation. Just realized that was why I couldn't find it earlier. Sorry for the trouble. Thanks!