Sony PCV-R553DS - Manual (Page 65)

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Chapter 4
System Board
This chapter identifies each component on the system board and provides
a detailed description of each connector, jumper, and switch on the
system board.
Processor Memory
Secondary IDE
Primary IDE
Battery
OM04581.VSD
Diskette
Front panel header
Mic In, Line In,
Line Out, Game
COM1, Monitor,
Printer
USB1
USB Header
CPU Fan
Keyboard, Mouse
Aux-In
(to CD-RW drive)
CD-In
(to DVD-ROM drive)
Power Supply
Slot 3 (PCI)
Slot 4 (PCI)
Slot 2 (PCI)
CMOS Clear
Clear 2-3
Normal 1-2
Slot 1 (PCI)
Power Supply Fan
WOL_CON
CHA FAN