Changing the Jumper Settings
The jumpers on the system board are preset to factory default
positions, indicated by an asterisk (*) in the tables below. (See
the illustration under “Locating the System Board
Components” to locate jumpers.) Use the information in this
section to change jumper settings, if necessary.
N o t e
Any jumpers not listed in the following tables are for service
purposes only. Do not change their settings.
Miscellaneous jumper settings
Jumper
number
JP2
JP25
JP49
JP50
Jumper
setting
1-2 *
2-3
Off*
On
On
Off*
1-2 *
2-3
Function
Enables on-board I/O controller
Disables on-board I/O controller
Enables PCI IDE controller
Disables PCI IDE controller
Clears CMOS memory (resets SETUP values to
factory defaults)
Normal CMOS values
Enables on-board VGA controller
Disables on-board VGA controller
* Default setting
Parallel port ECP mode DRQ jumper-settings
Function
JP8
JP18
DRQ1 (DACK1)*
1-2
2-3
DRQ4 (DACK3)
2-3
1-2
Installing
and Removing Options
4-9