Locating
parts
on
the
system
board
1
Microprocessor
fan
connector
14
Front
USB
connectors
(2)
2
Microprocessor
and
heat
sink
15
Battery
3
Memory
slot
1
16
Clear
CMOS/Recovery
jumper
4
Memory
slot
2
17
Serial
(COM)
connector
5
Memory
slot
3
18
PCI
adapter
card
slots
(2)
6
Memory
slot
4
19
Mono
(speaker)
connector
7
Cover
presence
switch
connector
20
Front
audio
connector
8
Diskette
drive
connector
21
CD-IN
connector
9
IDE
connector
22
PCI
Express
x16
graphics
adapter
card
slot
10
Power
connector
23
PCI
Express
x1
adapter
card
slot
11
Front
system
fan
connector
24
System
fan
connector
12
SATA
IDE
connectors
(4)
25
12v
power
connector
13
Front
panel
connector
Accessing
the
system
board
components
and
drives
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
and
understanding
the
“Important
safety
information”
in
the
ThinkCentre
Safety
and
Warranty
Guide
that
came
with
your
computer.
To
obtain
a
copy
of
the
ThinkCentre
Safety
and
Warranty
Guide
,
go
to:
http://www.lenovo.com/support
You
might
need
to
remove
the
drive
bay
assembly
to
access
the
system
board
components
such
as
memory
modules
and
battery.
Chapter
9.
Replacing
FRUs
-
Desktop
computers
119
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