Identifying parts on the system board, Identifying, Parts – IBM THINKCENTRE 8123 User Manual
Page 12: System, Board
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
Internal
speaker
connector
12
PCI
adapter
connector
2
Memory
connector
4
13
PCI
adapter
connector
3
Memory
connector
3
14
Serial
connector
(COM
2)
4
Memory
connector
2
15
PCI
Express
x1
adapter
connector
5
Memory
connector
1
16
Clear
CMOS/Recovery
jumper
6
Front
panel
connector
17
Battery
7
Power
supply
connector
18
Microprocessor
fan
connector
8
PATA
IDE
connector
19
Microprocessor
9
System
fan
connector
20
Microprocessor
heat
sink
10
SATA
IDE
connectors
(4)
21
12V
power
connector
11
PCI
Express
x16
graphics
connector
22
Diskette
drive
connector
4
Hardware
Replacement
Guide