ATX Version 3.0 Multi Rail Desktop Platform Power Supply Design Guide

Scope and location

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

PCI Express Add-in Card Considerations > sideband signals > CARD_CBL_PRES#, Primary Function, Secondary Function and termination paragraphs

Open the original source

Inspected

2026-10-21

Access

public page

Recorded AI-assisted source inspection; not independent human approval or hardware testing.

Source scope and unresolved evidence are preserved in the engineering variant.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.