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<p>when the DC voltages are in spec, so that the computer is able to safely power up and boot. The most recent ATX PSU standard is version 3.1 as of mid 2025.</p>

<p><big>Functions</big></p>
<p>The desktop computer power supply converts the <a href="page.php?w=alternating_current">alternating current</a> (AC) from a <a href="page.php?w=AC_power_plugs_and_sockets">wall socket</a> of <a href="page.php?w=mains_electricity">mains electricity</a> to a low-voltage <a href="page.php?w=direct_current">direct current</a> (DC) to operate the motherboard, processor</p><p>
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