Template:ATX power connector

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Revision as of 23:37, 27 November 2009 by 71.41.210.146 (talk) (Replaced hyphen with minus sign in footnote about −5V. Made global text-align:center and marked align="left" where appropriate.)
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24-pin ATX12V 2.x power supply connector
(20-pin omits the last 4: 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 No connection
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
The three shaded pins (8, 13, and 16) are data signals, not power.
Pin 20 used to provide −5VDC (white wire) in ATX and ATX12V
versions 1.2 and earlier. Version 1.2 allowed the omission of
this pin,and versions 1.3 and beyond prohibited this pin.
The right-hand pins are numbered 10 through 20 in the 20-pin version.