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at to atx conversion

Discussion in 'Hardware' started by unitedistand, Jul 9, 2003.

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  1. unitedistand

    unitedistand Thread Starter

    Jul 9, 2003
    I had recently recieved a server case to build a fellow pastor a high-end system for ministry purposes. Much to my dismay, the case came with an AT power supply. If any of you have moderate hardware expierience, you should know that the switch is connected directly to the power supply (in comparison to the ATX format which plugs the power switch into the mainboard and feeds off of the power running though the mainboard.)

    Since I will be using an ATX power supply, I have a couple questions:

    1) Is it possible to convert the power switch to be usable for an ATX power supply?

    2) If so, how would I go about doing that? (four wires run into this switch, they are color coded as follows: Brown, Blue, White and Black)

    3) If it is not possible to convert a switch, then where would a new ATX switch be purchaseable at?

    A picture of both the computer and the switch has been attached to see what I'm working with.

    Attached Files:

  2. Jedi_Master


    Mar 12, 2002
    Howdy there unitedistand...

    It can be done, but...because the switch is either always on, or always off, it would be very confusing as to how to power it up, and down, ( IE: you would have to push the switch to power it up, then push the switch again to break the connection, and do the same thing again to power it down, and for this to work you would need an OHM meter to check the switch, to see which wires make the connection ), however...assuming that the motherboard is an ATX motherboard, you can get an ATX power switch such as this, it should work just fine...
  3. gws226


    Feb 9, 2003
    Hello and welcome...
    As an alternative to Jmaster's suggestion, it may be worthwhile to purchase a base model ATX case with a power supply.

    Here's a list of cheap cases with PSU's from a reputable company

    If you can hold out a week or two... they may have a special or two popping up. 2 Weeks ago they were offering Codgen cases with 350 powmax powersupplies for $29 with free shipping.

    Good luck
  4. pronute


    Feb 12, 2003
    The switch for ATX is known as a momentary contact the contacts in the switch is spring loaded as soon as you press the switch the spring kicks back so the contactors can energize the solid state relay in the PSU. They can be purchased at most computer hardware outlets on the net, however that's only the tip of the iceberg, if your going to install an ATX motherboard in an AT case it will not work unless you do allot of modifications to the case, the mounting holes and stand off wont mach up on an ATX motherboard, and the I/O block on the motherboard will have to be accommodated. You are going to need a drill, #8 drill bit, 8-24 tap, dremel, sheet steel nippers. It will probably coast more to convert an AT to ATX then to just get an ATX case already made.
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