[Beowulf] ATX on switch

Dmitri Chubarov dmitri.chubarov at gmail.com
Sun Oct 4 09:23:08 EDT 2009


Hello, Tomislav,

Anthony is right pointing that the "On after AC loss" or a similar feature
would help on multiple occasions of sudden loss of power, however a switch
would probably be handy in your setup.

Basically any microswitch from an electronics shop would go. It might
be more difficult to attach the wires to the pinout on the motherboards.
Also note that in most ATX cases the wires are run through a ferrite bead to
reduce high frequency interference.

Best regards,
  Dima


On Sun, Oct 4, 2009 at 8:08 PM, Tony Travis <a.travis at abdn.ac.uk> wrote:

> Tomislav Maric wrote:
>
>> Hi again,
>>
>> where can I get an "on/off" and "reset" switch for ATX motherboard
>> without buying and ripping apart a case?
>>
>>  Should I make one? I'm planning on having up to 12 mobos: should I use
>> software for powering them off and reseting them (i.e. over LAN), or
>> make a bunch of switches and place them in a case? Any suggestions?
>>
>> I'm afraid to use a screwdriver and short circuit the pins. :)
>>
>
> Hello, Tomislav.
>
> You could set the BIOS to power state to "ON after AC loss".
>
> I do this because I have lots of COTS PC's in tower cases on industrial
> shelving in our computer room and it's awkward to go round pressing all the
> on/off switches ;-)
>
> Bye,
>
>  Tony.
> --
> Dr. A.J.Travis, University of Aberdeen, Rowett Institute of Nutrition
> and Health, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland, UK
> tel +44(0)1224 712751, fax +44(0)1224 716687, http://www.rowett.ac.uk
> mailto:a.travis at abdn.ac.uk, http://bioinformatics.rri.sari.ac.uk/~ajt<http://bioinformatics.rri.sari.ac.uk/%7Eajt>
>
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