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Power Connectors And ATX Standards

PC Interfaces 101
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The various types of power connections are shown in the following tables and illustrations.

Peripheral device connector
AMD
Socket 462
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin
AUX plug (6-pin) not used
P4 connector (4-pin 12V) rarely used
Socket 754
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin, sometimes 24-pin
AUX plug (6-pin) not used
P4 connector (4-pin 12V) sometimes needed
Socket 939
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin, sometimes 24-pin
AUX plug (6-pin) not used
P4 connector (4-pin 12V) sometimes needed
Intel
Socket 370
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin
AUX plug (6-pin) rarely used
P4 connector (4-pin 12V) rarely used
Socket 423
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin
AUX plug (6-pin) rarely used
P4 connector (4-pin 12V) needed
Socket 478
Power Supply Standard ATX12V 1.3 or higher
ATX plug 20-pin
AUX plug (6-pin) not used
P4 plug (4-pin 12V) needed
Socket 775
Power Supply Standard ATX12V 2.01 or higher
ATX plug 24-pin, sometimes 20-pin
AUX plug (6-pin) n/a
P4 plug (4-pin 12V) needed
P4 plug (8-pin 12V) 945X chipset (DualCore) or higher often needs this connection

ATX plug with 24 pins (Extented ATX)

20-pin ATX motherboard connector

20-pin ATX cable

6-pin EPS connector
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