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AT motherboard power supply specification users reports and reviews

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There are 31 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
2022-10-22 22:32:02rev. 8CORRECTAPPROVED
2023-10-29 19:57:08rev. 8CORRECTAPPROVED

History of users contributions

Date Content
Author Comment
2008-08-21 21:57:28rev. 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 18:58:39rev. 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