|Please turn off your caps lock. It is considered to be shouting and is not really acceptable.|
If there is something printed like "Clear CMOS" and the numbers 0,1,2, then is is best for you not to touch it. At best, if that is what it says and you are unplugged, you will clear out the CMOS memory and need to reset your BIOS settings and date/time for your machine. At worst, if it is plugged in, you might fry some components and have to replace the motherboard.
Post the make and model of the motherboard for more details, but for most modern motherboards for general use, motherboard jumpers are not used for add ons and expansion. Turning on and off most features is controlled by settings in your BIOS set up and not that way. Post your details and read your online manual for specifics, but tell us what you are trying to do and we can help.
You have to be a little bit crazy to keep you from going insane.