Difference between revisions of "Template:ATX power connector"

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blackwiki>Jesse Viviano
(Mark pin 20 as reserved, because all versions of the 24-pin ATX12V power supply connector prohibits -5V and reserves this pin as of now.)
(Slight vertical shrink by combining table footnotes.)
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| colspan="6" style="font-size:75%; width: 350px"|''Pins 8, 13, and 16 (shaded) are control signals, not power:
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| colspan="6" style="font-size:75%; width: 350px"|
* "Power On" is [[Pull-up resistor|pulled up]] to +5V by the PSU, and must be driven low to turn on the PSU.
+
* Pins 8, 13, and 16 (shaded) are control signals, not power:
* "Power good" is low when other outputs have not yet reached, or are about to leave, correct voltages.
+
** "Power On" is [[Pull-up resistor|pulled up]] to +5V by the PSU, and must be driven low to turn on the PSU.
* The "+3.3 V sense" line is for [[Four-terminal sensing|remote sensing]].<ref>{{cite web |title=ATX Specification Version 2.1|url=http://www.formfactors.org/developer%5Cspecs%5Catx2_1.pdf}}</ref>''
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** "Power good" is low when other outputs have not yet reached, or are about to leave, correct voltages.
|-
+
** The "+3.3 V sense" line is for [[Four-terminal sensing|remote sensing]].<ref>{{cite web |title=ATX Specification Version 2.1|url=http://www.formfactors.org/developer%5Cspecs%5Catx2_1.pdf}}</ref>''
| colspan="6" style="font-size:75%; width: 350px"|''Pin 20  (−5V, white wire) is absent in current power supplies; it was optional in ATX and ATX12V version 1.2, and deleted as of ver. 1.3.''
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* Pin 20  (−5V, white wire) is absent in current power supplies; it was optional in ATX and ATX12V version 1.2, and deleted as of ver. 1.3.
|-
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* The right-hand pins are numbered 11–20 in the 20-pin version.
| colspan="6" style="font-size:75%; width: 350px"|''The right-hand pins are numbered 11–20 in the 20-pin version.''
 
 
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Revision as of 19:26, 4 November 2010

24-pin ATX12V 2.x power supply connector
(20-pin omits the last four: 11, 12, 23 and 24)
Color Signal Pin Pin Signal Color
Orange +3.3 V 1 13 +3.3 V Orange
+3.3 V sense Brown
Orange +3.3 V 2 14 −12 V Blue
Black Ground 3 15 Ground Black
Red +5 V 4 16 Power on Green
Black Ground 5 17 Ground Black
Red +5 V 6 18 Ground Black
Black Ground 7 19 Ground Black
Grey Power good 8 20 Reserved N/C
Purple +5 V standby 9 21 +5 V Red
Yellow +12 V 10 22 +5 V Red
Yellow +12 V 11 23 +5 V Red
Orange +3.3 V 12 24 Ground Black
  • Pins 8, 13, and 16 (shaded) are control signals, not power:
    • "Power On" is pulled up to +5V by the PSU, and must be driven low to turn on the PSU.
    • "Power good" is low when other outputs have not yet reached, or are about to leave, correct voltages.
    • The "+3.3 V sense" line is for remote sensing.[1]
  • Pin 20 (−5V, white wire) is absent in current power supplies; it was optional in ATX and ATX12V version 1.2, and deleted as of ver. 1.3.
  • The right-hand pins are numbered 11–20 in the 20-pin version.
  1. "ATX Specification Version 2.1" (PDF).