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Identifying
parts
on
the
system
board
The
system
board
(sometimes
called
the
planar
or
motherboard)
is
the
main
circuit
board
in
your
computer.
It
provides
basic
computer
functions
and
supports
a
variety
of
devices.
The
following
illustration
shows
the
locations
of
parts
on
the
system
board.
1
Fan
connectors
(2)
8
Diskette
drive
connector
2
Memory
connectors
(2)
9
Power
button
and
front
LED
assembly
connector
3
SATA
IDE
hard
disk
drive
connectors
(2)
10
Power
supply
connector
4
Riser
connector
11
PATA
Primary
IDE
connector
(hard
disk
drive
and
CD-ROM
drive)
5
CMOS
Battery
12
Power
supply
connector
6
Clear
CMOS/BIOS
recovery
jumper
13
Microprocessor
7
Internal
speaker
connector
Removing
and
replacing
the
power
supply
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
the
“Safety
notices”
in
the
Quick
Reference
that
was
included
with
your
computer.
If
you
no
longer
have
this
copy
of
the
Quick
Reference,
you
can
obtain
one
online
from
the
IBM
Web
site
at
http://www.ibm.com/pc/support.
To
remove
and
replace
the
power
supply,
do
the
following:
1.
Open
the
cover.
Go
to
“Opening
the
cover”
on
page
1.
Replacing
customer
replaceable
units
(CRUs)
3