Difference between revisions of "Template:ATX power connector"

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m (Moved reflist to noinclude section, to eliminate cite errors on pages using this template.)
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| 8
 
| 8
 
| 20
 
| 20
| colspan="2" align="left"| No connection
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|style="font-size:85%"| −5 V (Obsolete)
 +
|style="background:white; color:black"| ''(White)''
 
|-
 
|-
 
|style="background:purple; color:white"| Purple
 
|style="background:purple; color:white"| Purple
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|style="background:black; color:white"| Black
 
|style="background:black; color:white"| Black
 
|-
 
|-
| colspan="6" style="font-size:75%; width: 350px"|''The three shaded pins (8, 13, and 16) are control signals, not power. "Power On" is [[Pull-up resistor|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 [[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"|''Pins 8, 13, and 16 (shaded) are control signals, not power:
 +
* "Power On" is [[Pull-up resistor|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 [[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 used to provide −5VDC (white wire) in ATX and ATX12V versions up to 1.2.  It is optional in version 1.2, and missing in ver. 1.3 and up.''
+
| 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.''
 
|-
 
|-
| colspan="6" style="font-size:75%; width: 350px"|''The right-hand pins are numbered 11 through 20 in the 20-pin version.''
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| 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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[[Category:Computing templates|{{PAGENAME}}]]
 
[[Category:Computing templates|{{PAGENAME}}]]
 
{{Reflist}}
 
{{Reflist}}
 
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Revision as of 15:24, 27 October 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 −5 V (Obsolete) (White)
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).