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5 Technical Reference
Board Connectors
The board connectors can be divided into three groups:
• Back panel connectors
• Midboard connectors
Audio connectors
Power and hardware connectors
Add-in board and peripheral interface connectors
• Front panel connectors
CAUTION
Many of the midboard and front panel connectors provide operating voltage (+5 V dc and
+12 V dc, for example) to devices inside the computer chassis, such as fans and internal
peripherals. These connectors are not overcurrent protected. Do not use these connectors for
powering devices external to the computer chassis. A fault in the load presented by the external
devices could cause damage to the computer, the interconnecting cable, and the external devices
themselves.