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POST card is nothing but Power On Self Test. In most applications it is really critical to know if the devices are functioning properly before making the system fully operational. POST card does exactly this. It diagnoses problems and reports them halting the operation of the system.

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14y ago
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12y ago

It will tell you the status error of the POST, even if the computer is not capable of starting at all. The only exception is if the power supply isn't working at all.

The POST card also tells you which parts, if any, of the power supply is failing (typically having LEDs to indicate voltage).

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Q: What is the purpose of a POST diagnostics card?
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