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Basics Boards and Cards - 34
I/O Logic Board
The I/O logic board includes
all the I/O interfaces, video
and display support, and
expansion bays. The PC Card
cardcage mechanism
(CardBus slots) is a
separate part that connects
to the I/O logic board.
The I/O logic board also
includes two I/O controller
ICs that integrate most of the
standard Macintosh I/O
controllers such as SCSI,
SCC, IDE, floppy disk,
sound, Ethernet, and VIA.
Fan
Connector
Display Data
Cable
Connector
PC Card
Cardcage
Connector
Display Inverter
Cable
Connector
Sound
Card
Connector
Microprocessor
Board
Connector
Hard Drive
Connector
PMU Board Connecto
r
Power Supply Card
Connector
Modem Card
Connector
Expansion Bay
Connector
Expansion Bay
Connector