Lenovo a55 8705 ユーザーズマニュアル
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
that
are
factory-installed
or
that
you
can
install
later.
The
following
illustration
shows
the
locations
of
parts
on
the
system
board.
1
Memory
connector
1
10
Internal
speaker
connector
2
Memory
connector
2
11
Diskette
drive
connector
3
SATA
IDE
connectors
(2)
12
Front
panel
connector
4
BIOS
WP
13
Power
supply
connector
5
Cover
presence
switch
(Tamper
SW)
connector
14
12v
power
connector
6
PCI
riser
connector
15
Microprocessor
7
Battery
16
Fan
connector
2
8
Clear
CMOS/Recovery
jumper
17
Fan
connector
1
9
Temperature
sensor
connector
Chapter
3.
Installing
options
23