ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide

Scope and location

Exact named pinout variant only; not capability or compatibility approval.

Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs

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2026-10-21

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