Identifying
parts
on
the
system
board
The
system
board,
also
called
the
planar
or
motherboard,
is
the
main
circuit
board
in
your
computer.
It
provides
basic
computer
functions
and
supports
a
variety
of
devices
that
are
IBM-installed
or
that
you
can
install
later.
See
the
following
illustration
for
the
location
of
parts
on
the
system
board.
1
Microprocessor
9
Battery
2
DIMM
connectors
(1,
2,
3
left
to
right)
10SCSI
LED
connector
3
Front
panel
connector
11PCI
slots
4
Power
connector
12Front
panel
audio
connector
5
Diskette
drive
connector
13CD-ROM
audio
connector
6
Primary
IDE
connector
14AGP
slot
7
Secondary
IDE
connector
1512V
Power
connector
8
Clear
CMOS/Recovery
jumper
Removing
the
cover
Important
Read
before
removing
the
cover
read
“Safety
information”
on
page
187
and
“Handling
electrostatic
discharge-sensitive
devices”
on
page
190.
To
remove
the
cover:
1.
Shut
down
your
operating
system,
remove
any
media
(diskettes,
CDs,
or
tapes)
from
the
drives,
and
turn
off
all
attached
devices
and
the
computer.
2.
Unplug
all
power
cords
from
electrical
outlets.
Chapter
6.
Replacing
FRUs
39