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POST card
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{{Short description|Computer diagnostic interface card}} {{Not to be confused with|Postcard}} {{Refimprove|date=July 2009}} [[File:BIOS POST card.jpg|thumb|220px|BIOS POST card for ISA bus. Two [[seven-segment display]]s show the POST-code. Four [[Light-emitting diode|LEDs]] display presence of +/-5 V and +/-12 V.]] [[File:POST card 3usd.jpg|thumb|BIOS POST card for PCI bus]] [[File:BIOS POST card for PCI, PCIe and LPC bus.jpg|thumb|BIOS POST card with connectors for the PCI (bottom), PCIe (top) and LPC (left 2 mm and right 2.54 mm) busses]] In [[computing]], a '''POST card''' is a plug-in diagnostic [[Expansion card|interface card]] that displays progress and error codes generated during [[power-on self-test]] (POST) of a computer. It is used to troubleshoot computers that do not [[Booting|start up]].
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