Family reference
Browse the documented PC internal connector forms while keeping identification separate from implementation-specific capability.
6 forms 6 engineering profiles 3 related comparisons
Recognition & reference
Recognition illustrations are not to scale or fabrication drawings. The label-led symbols below, where present, are not interface geometry. Read the illustration limits in each exact reference; equal image boxes do not establish equal physical sizes.
Computer-generated illustrationP343 / PC internal / Connector form
Three contacts do not establish automatic speed control: the motherboard must support the correct fan-control method.
Computer-generated illustrationP344 / PC internal / Connector form
Four contacts identify a candidate PWM form; they do not prove a particular board header offers PWM mode or adequate power.
Computer-generated illustrationP345 / PC internal / Connector form
A keyed header silhouette is not enough: Intel also documents a separate internal variant keyed at two positions.
Computer-generated illustrationP346 / PC internal / Connector form
Do not identify an audio header by a 2×5 outline alone; even similarly keyed HD-audio implementations can use different pitches.
Computer-generated illustrationP347 / PC internal / Connector form
Connecting a five-volt addressable LED accessory to a twelve-volt RGB header can damage the accessory.
Computer-generated illustrationP348 / PC internal / Connector form
Voltage and signaling class are more important than a superficial resemblance between small lighting headers.
An alternate overview of the same facts shown in the cards. On narrow screens, scroll the table horizontally or read the cards above. Alias lists retain the existing first four entries; the full record has further detail. This is not a dimension, pinout or compatibility table.
| Connector form | Shape | Common aliases | Engineering |
|---|---|---|---|
| 3-pin PC fan connector / motherboard header | row-header | 3-pin fan header, 3 pin PC fan, DC fan header, three pin fan | Engineering profile → |
| 4-pin PWM PC fan connector / motherboard header | row-header | 4-pin PC fan header, PWM fan header, four pin PWM fan | Engineering profile → |
| Internal USB 2.0 dual-port header — keyed 2×5, pin 9 | two-row-header | 9-pin USB 2.0 header, USB 2 front panel header, internal 2x5 USB2, front USB2 header | Engineering profile → |
| HD Audio front-panel header — keyed 2×5 (Intel example) | two-row-header | HD AUDIO header, AAFP motherboard header, 10-1 front-panel audio, front panel audio 2x5 | Engineering profile → |
| 12 V four-pin motherboard RGB header (MSI JRGB) | led-header | JRGB 12V, RGB 4-pin motherboard header, 12V RGB header, nonaddressable RGB header | Engineering profile → |
| 5 V addressable RGB header (MSI JRAINBOW) | led-header | JRAINBOW 5V, ARGB header 3 pin, 5V digital RGB header, addressable RGB motherboard | Engineering profile → |
Tell them apart
Related pages may include forms from another family. They explain distinctions, not permission to connect.
Before choosing a reference
Resolve abbreviations, informal names and legacy labels without treating an alias as an additional connector identity.
Open PC internal terminology and aliases →Continue with the evidence
A family name is a starting point. Use the exact record and device documentation before choosing cables or planning a connection.
