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Powering the M2-ATX Inside

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  • Powering the M2-ATX Inside

    Is it possible to power the M2-ATX via house outlets? If I just hook up an AC/DC adapter and set it to 12V, snip the ends off and tie the wires to the M2-ATX power wires would that work or blow something up?
    Current Vehicle: 2007 Dodge Nitro

    Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

    First Vehicle: 2003 Ford Ranger

  • #2
    That would work, but besides 12 volts, you also need to make sure that ac-dc adaptor you are using meets the Current needed for the M2-ATX.

    I'm unsure if they list the specs needed, but 12 volts 800 mAmps might not be enough for the M2, where as 12 volts 1200 mAmps would be better.

    Similar notion for the screens we use. You have to verify the power settings before using any old power adaptor.

    Anyone know how many amps the M2 needs, or if it would cause damage using an underrated adaptor? I know the M2 is intelligent, but I'm not sure what would happen not given enough amps to operate.
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    • #3
      The M2-ATX is fused at 15A.

      I am powering it on the bench with a ATX PSU rated at 14A on the 12V rail. Works fine for me. However I am drawing no more than 6A from it.

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      • #4
        Originally posted by SnyperBob
        I'm unsure if they list the specs needed, but 12 volts 800 mAmps might not be enough for the M2, where as 12 volts 1200 mAmps would be better.

        Similar notion for the screens we use. You have to verify the power settings before using any old power adaptor.

        Anyone know how many amps the M2 needs, or if it would cause damage using an underrated adaptor? I know the M2 is intelligent, but I'm not sure what would happen not given enough amps to operate.

        1200 mAmps gives you a max of 14.4 Watts , which is too low. It is rated at 160 Watts (160/12=13.33 Amps) - (uses a 15 Amp fuse). 12 VDC, 14 Amp would be the best.


        I was thinking if u could power it off the 12 V rail from a normal desktop PSU. Will a 250 Watt PSU supply enough current on the 12 V rail - that is 14 Amps @ 12V???

        Final Touches

        Car: 2002 Mitsubishi Magna EI
        CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB.
        Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp

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        • #5
          Well, you've answered your own question.. The M2 will draw 13.3 amps max... If the PSU you have can put out 14 amps on the 12 volt rail, you'll be fine.

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          • #6
            Originally posted by Teranfirbt
            Well, you've answered your own question.. The M2 will draw 13.3 amps max... If the PSU you have can put out 14 amps on the 12 volt rail, you'll be fine.
            Guess I did

            Final Touches

            Car: 2002 Mitsubishi Magna EI
            CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB.
            Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp

            Comment


            • #7
              Originally posted by piabu
              The M2-ATX is fused at 15A.

              I am powering it on the bench with a ATX PSU rated at 14A on the 12V rail. Works fine for me. However I am drawing no more than 6A from it.
              How do you power it using an ATX PSU?
              Current Vehicle: 2007 Dodge Nitro

              Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

              First Vehicle: 2003 Ford Ranger

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              • #8
                You splice into the 12v from a molex conenctor.
                Have you looked in the FAQ yet?
                How about the Wiki?



                Under normal circumstances, a signature would go here.

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                • #9
                  That's what I figured but wanted to make sure.

                  Thanks
                  Current Vehicle: 2007 Dodge Nitro

                  Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

                  First Vehicle: 2003 Ford Ranger

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                  • #10
                    So to be clear before I damage anything.. Just snip and strip a 12V and ground wire on one of my molex connectors, connect those two wires to the hot and ground of the M2, plug the M2 to my mobo, then plug the ATX PSU into the wall?
                    Current Vehicle: 2007 Dodge Nitro

                    Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

                    First Vehicle: 2003 Ford Ranger

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                    • #11
                      Originally posted by tbird2340
                      So to be clear before I damage anything.. Just snip and strip a 12V and ground wire on one of my molex connectors, connect those two wires to the hot and ground of the M2, plug the M2 to my mobo, then plug the ATX PSU into the wall?
                      Yes, but after you do you'll notice that the ATX PSU won't power on. If you look at the ATX motherboard connector (on the ATX AC PSU only), you should find one green wire. Connect that wire to a ground line on the same connector and the PSU will start when turned on.

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                      • #12
                        In the older PSUs, you may also need to tie the 3.3v sense wire to a +3.3v. And some PSUs may not output to specification until you provide a resistive load. Connect a large power resistor to ground from the 5v, or just leave an old CD-ROM or HDD connected to a spare molex.

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                        • #13
                          There are 3 wires on the M2. Battery into yellow molex, Ground into black molex. Where does the last wire go??

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                          • #14
                            Originally posted by john94587
                            There are 3 wires on the M2. Battery into yellow molex, Ground into black molex. Where does the last wire go??
                            ACC / Ignition.

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                            • #15
                              I meant into the ATX PSU.
                              We're talking about hooking up the M2 inside the house with the AC ATX PSU.

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