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Chapter 4: Motherboard Connections
Chapter 4
Motherboard Connections
This section describes the jumpers, connections and LEDs on the motherboard and provides
pinout definitions. Some connections might not be used in this system. A motherboard layout
indicating component locations may be found in
. More detail can be found in the
4.1 Power Connections
Two power connections supply the motherboard and several more supply for onboard devices.
Main Power Connector
The 24-pin power supply connector (JPWR3) meets the ATX SSI EPS 12V specification. You
must also connect the 8-pin 12V DC power connectors (JPWR1/JPWR2).
Important:
To provide adequate power to the motherboard, connect both the main power
connector and 8-pin power connectors to the power supply. Failure to do so may void the
manufacturer's warranty on your power supply and motherboard.
8-pin Power
Pin Definitions
Pin#
Definition
1 - 4 Ground
5 - 8 +12 V