System-board
jumpers
The
following
illustration
shows
the
jumpers
on
the
system
board.
Any
jumpers
on
the
system
board
that
are
not
shown
in
the
illustration
are
reserved.
See
the
section
about
recovering
the
basic
input/output
system
(BIOS)
code
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
Documentation
CD
for
information
about
using
the
BIOS
recovery
jumper.
Table
2
describes
the
function
of
each
jumper
on
the
system
board.
Power-on password
override (J37)
BIOS recovery (J35)
Wake-on-LAN
(J33)
Table
2.
System
Board
Jumpers
Jumper
number
Description
J33
Wake
on
LAN
:
The
default
position
is
pins
1
and
2.
Change
the
position
of
this
jumper
to
pins
2
and
3
to
prevent
a
Wake
on
LAN
packet
from
waking
the
system
when
the
system
is
in
the
power-off
state.
J35
BIOS
recovery
:
The
default
position
is
pins
1
and
2
(use
the
primary
page
during
startup).
Move
the
jumper
to
pins
2
and
3
to
use
the
secondary
page
during
startup.
J37
Power-on
password
:
The
default
position
is
pins
1
and
2.
Changing
the
position
of
this
jumper
to
pins
2
and
3
bypasses
the
power-on
password
check
the
next
time
the
server
is
turned
on
and
starts
the
Configuration/Setup
Utility
so
that
you
can
change
or
delete
the
power-on
password.
Changing
the
position
of
this
jumper
does
not
affect
the
administrator
password
check
if
an
administrator
password
is
set.
It
you
forget
the
administrator
password,
you
must
replace
the
system
board.
For
additional
information
about
passwords,
see
“Passwords”
on
page
69.
Chapter
2.
Installing
optional
devices
21
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