Noctua 3-pin and 4-pin motherboard fan FAQ

Scope and location

Fan-family contact-count and conditional motherboard control; Noctua examples only.

3-pin fan on 4-pin PWM header; 4-pin fan on 3-pin header; PWM versus DC control

Open the original source

Inspected

2026-10-09

Access

public page

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

Fan color, connector shape and header modes vary; not a universal polarity or current-rating certificate.

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