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Power connector pinout - HP ScanJet 5470 Flatbed Scanner

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  • kistler Feb 22, 2012

    I'm confused because the power adapter that I have been using for several years is rated at 12 volts while the information that I find on the web for HP 4570C scanner indicates that it requires 24 volts. My earlier question on the pinout of the adapter was answered by carefully observing the markings on the adapter (VERY SMALL) so I believe the 12 volt is correct since only two of the four pins on the connector are shown to be active. Were some earlier versions of the HP 4570C scanner configured to run on only 12 volts? I'm about to open the unit and see what there is to see but would appreciate any comments others may have. THANKS, Jim

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pinouts.ru/Power/atx_v2_pinout.shtml

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I'm sorry but I believe you have this posted in the wrong product category? Please re-post the question in the proper category if this is the case, otherwise you have my apologies. This is the car and truck problem category



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The +12 volt is the yellow colored wire and the black is the ground.
To turn on the switch mode power supply connect pin 14 (for a 20pin connector) or pin 18 (for a 24pin connector) to ground.
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Please click on this link for diagrams of the 20 and 24 connector pinouts :-
http://pinouts.ru/Power/atxpower_pinout.shtml
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7ad7c03.png

If you need more information about your motherboard, you can always download the manual from this link,

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Don't forget to rate my solution, thanks!!!

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>socket/plug for a Compaq TFT450 LCD Monitor that she
>supplied (edited for further clarity).
>
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>
>
>
> 1 2
>
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>
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>
>
>
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>
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>
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>
>
>
>For clarification - the male will be the end of your cable, and not the socket on the monitor.
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