Basics Logic Board Diagram - 2 3 Power Macintosh 9500 Logic Board
External
SCSI
AAUI 
Ethernet
10BASE-T
Ethernet
Printer/
Modem
ADB
Sound
In/Out
PCI
Slots
Battery
ROM
SIMM
ROM (4 MB)
DRAM
DIMM
Slots
Processor
Card Slot
Power On/Off
Power LED
Internal SCSI Power
Supply SpeakerCD-ROM
Audio Floppy
Drive Power Supply
DRAM
DIMM
Slots
Fan
Cuda Reset