ATX Version 3.0 — PCIe auxiliary power connector assignments

Scope and location

Engineering-sidecar source for legacy PCIe 2x3/2x4 assignments and the ATX 3.0 12VHPWR 12+4 assignment/3.0 mm power-contact spacing context.

Tables 5-4, 5-5 and 5-7; 12VHPWR connector description

Open the original source

Inspected

2026-10-05

Access

public page

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

Exact ATX 3.0 design-guide scope only. 12VHPWR is retained as the documented historical form and must not be silently generalized to later 12V-2x6 revisions or proprietary modular-PSU connectors.

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