System-board internal connectors
The following illustration shows the internal connectors on the system board.
Microprocessor
power
Microprocessor
Battery
Front panel
switch/LEDs
CD audio
Internal speaker
Ethernet activity
IDE
System error
SATA drive 2
SATA drive 1
SATA drive 3
SATA drive 4
IEEE 1394
(FireWire)
(front)
Intrusion switch
System fan
Auxiliary power
Main power
Wake-on-LAN
Microprocessor fan
Chapter 4. Installing optional devices
33