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AT motherboard power supply specification users reports and reviews

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There are 29 approved reports in our database

Date Content
User opinion Comment Approved by moderator?
2009-01-28 05:03:07rev. 3CORRECTAPPROVED
2009-02-25 18:14:51rev. 3CORRECTAPPROVED
2009-05-29 16:34:01rev. 4CORRECTNo errors, perfect!APPROVED
2009-06-14 06:49:57rev. 4CORRECTAPPROVED
2009-07-23 20:42:47rev. 4CORRECTAPPROVED
2010-05-05 17:29:28rev. 4CORRECTAPPROVED
2010-07-01 15:46:12rev. 4CORRECTAPPROVED
2010-08-24 10:52:47rev. 5CORRECTAPPROVED
2012-02-18 15:01:59rev. 6CORRECTAPPROVED
2012-05-16 23:40:56rev. 6CORRECTAPPROVED
2012-06-28 18:50:57rev. 6CORRECTAPPROVED
2012-09-27 18:50:15rev. 6CORRECTVerified on an old Win2K box that matched exactly.APPROVED
2013-01-31 00:02:08rev. 6CORRECTAPPROVED
2013-12-18 17:11:48rev. 6INCORRECTI am looking at an AT power supply with the AUX connector as +5 volts (all 3 wires) not +3.3 volts.APPROVED
2014-08-10 05:21:27rev. 6CORRECTNot an error but I can add that these two connectors are whar are used on a Lite-On PA-4022-6B Power Supply which came out of an old Packard Bell Desktop PC. It has several other 4 pin connectors but these two are the main motherboard connectors and the ones which must be connected for the power supply to operate as designed.APPROVED
2016-03-19 23:42:38rev. 6CORRECTAt least one P10 motherboard worked without proper supply (only P8/P9 were connected), but 3.3V PCI board didn't work on this motherboard due to obvious reasons.APPROVED
2016-10-08 04:10:00rev. 6CORRECTAPPROVED
2017-09-14 16:48:46rev. 7CORRECTAPPROVED
2017-12-12 17:35:37rev. 7CORRECTAPPROVED
2018-10-27 20:59:43rev. 7CORRECTAPPROVED
2019-10-21 23:22:21rev. 7CORRECTAPPROVED
2019-11-27 04:22:03rev. 7ERROR FIXEDThe P10 Aux you are showing [3x 3.3v] + [3x GND] is proprietary to some Dell socket 5, 7 and 8 motherboards. You show that and then talk about "extra wattage ... for 3.3 and 5 volts" but there is no +5v that connector. The standard 6-Pin ATX AUX has [1x +5v] + [2x 3.3v] and [3x GND]. If your image was of that one then your verbiage would make sense. .APPROVED
2021-12-01 18:41:11rev. 8CORRECTThe proprietary 3.3V connector is not only for Dell, but also IBM (especially Power Series) and Intel (e.g. Atlantis Socket 5 and similar Socket 7 mainboards). According to Intel documentation (e.g. Intel Advanced/AS mainboard), the pinout stays the same as shown in the document. The 3.3V has been used exclusively to power PCI slots - while on-board internal regulator usually makes 3.3V for chipset and CPU, it may be too weak for some PCI boards so in early mainboards it is not routed to slots.APPROVED

History of users contributions

Date Content
Author Comment
2008-08-21 20:57:28rev. 3Brad GilbertAdded a connector that can occasionally be found
2011-03-23 14:41:07rev. 5alcie_mike@mail.ruПо-видимому опечатка в описании P10; но достоверно не скажу. На плате у меня - 3 пина 3.3В..
2011-07-21 17:58:39rev. 6TonyJust a grammatical correction on the Orange line

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Pinouts.ru > Pinout of AT motherboard power supply and layout of 12 pin 2x MOLEX 15-48-0106 connector and 6 pin 2x MOLEX 90331-0001 connector
should be correct