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dual switching power supply question


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I have a motherboard, it can power up by 5V.
But i found it the only way i can power it and boot into windows is using parallel mode (master must in CV,slave in CC).If i want to see the current flow, then i need to sum the readings from master and slave.

If i use indepent mode (Master:CV) to 5V, it will auto restart when RAM shadows finished.Cannot boot into windows.

Can anyone here explain to me why???

post-3436-14279143234639_thumb.jpg

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You have two power supplies in a single case. One of them doesn't produce enough current so you must connect them in parallel but then must add the current readings.
Of course the pc will auto start when a single supply is used because it doesn't provide enough current.

Get a supply that can supply enough current.

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