2-12
S
UPER P3TDDR User’s Manual
2-7
Jumper Settings
Explanation of
Jumpers
To modify the operation of the
motherboard, jumpers can be used
to choose between optional set-
tings. Jumpers create shorts be-
t w e e n t w o p i n s t o c h a n g e t h e
function of the connector. Pin 1 is
identified with a square solder pad
on the printed circuit board.
On a 2-pin jumper, "Closed" means
the jumper is over both pins (to
" c l o s e " t h e c o n n e c t i o n ) a n d
"Open" means the jumper is either
off or on a single pin only. See
the motherboard layout pages for
jumper locations.
C o n n e c t o r
P i n s
J u m p e r
C a p
Setting
Pin 1-2 short
Front Side Bus Speed
The FSB speed (also known as
system speed) is set with JP6 and
JP7. See the table on the right for
pin definitions.
Note: Most Intel processors have
a fixed speed that overrules the
setting of JP6 and JP7.
3 2 1
3 2 1
F ro n t S id e B u s S p e e d J u m p e r S e ttin g s
(J P 6 , J P 7 )
JP 6
1 -2
2 -3
O p e n
JP 7
1 -2
2 -3
O p e n
F S B S p e e d
A u to
6 6 M H z
1 0 0 M H z
1 3 3 M H z
N o te : T h e A u to s e ttin g a llo w s th e C P U
to s e t th e s p e e d .
O p e n
2 -3
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