Jumper J12 - ISA IDE interrupt
This jumper is provided to allow the ISA IDE controller to be
configured as either the primary or secondary IDE controller.
On systems fitted with a PCI IDE controller this jumper clip
will be in the position marked SEC.
On systems not fitted with a PCI IDE controller, or where
the PCI IDE controller is disabled, the jumper clip must be in
the position marked PRI.
Jumpers J13 and J14 - Cache module type
These two jumpers are only fitted on motherboards which
support a cache module.
Normally both jumpers should be in the position marked
ASYNC, to suit an asynchronous cache module.
If you install a synchronous cache module both jumpers must
be moved to the position marked SYNC.
Inside your computer
XEN OWNER'S HANDBOOK A/17