Function

• Computer power connections are used to supply power to essential components, including the central processing unit (CPU), memory cards and any peripheral cards attached to the motherboard.
  
  

Types

• Older motherboards include a single connection to accommodate the computer's power supply. There are typically two power connections on motherboards manufactured after 2003.
  
  

Identification

• Power supplies attach to the motherboard with molex plugs. Older motherboards use a 20-pin power connection while newer motherboards require a 24-pin power connection and an additional 4-pin power connection.
  
  

Benefits

• On newer motherboards, the 4-pin connection is used to supply power directly to the CPU. The additional 24-pin connection powers the other components attached to the motherboard.
  
  

Considerations

• Several adapters can be used to overcome incompatibility issues between power supplies and computer motherboard connections.