Jumper	Function	1 - 2	2 - 3
J1	FDD write protection	Normal	Write protection
J2	PASSWORD control	Enable	Disable
J3	CMOS setup control	Enable	Disable
J4	CMOS Clear	Normal	CMOS Clear

 

If the computer case does not have a front panel connector and your computer has never had any sound, then you must ensure that jumper CN82 is closed as per the diagram below or your rear sound ports will not function.
If you believe this is affecting your computer, please contact technical support. Attempting to modify the inside of your computer without taking the correct precautions can cause damage to your personal computer.