FIELD GUIDESource-led reference
Port & Cable

P347 / PC internal / Connector

12 V four-pin motherboard RGB header (MSI JRGB)

MSI documents its JRGB header as a four-pin 12 V connector for non-addressable RGB LED equipment, distinct from the five-volt addressable JRAINBOW family.

Also called JRGB 12V RGB 4-pin motherboard header 12V RGB header nonaddressable RGB header

Connecting a five-volt addressable LED accessory to a twelve-volt RGB header can damage the accessory.

Look for

Find the JRGB label and corresponding 12 V reference in the actual motherboard manual; do not decide by a loose RGB plug alone.

Claim inspection dates: 2026-10-09, 2026-10-13 · Independent review pending

12 V four-pin motherboard RGB header (MSI JRGB): three-quarter view. Computer-generated illustration, not a photograph.

Three-quarter view Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

12 V four-pin motherboard RGB header (MSI JRGB): mating face. Computer-generated illustration, not a photograph.

Mating face Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

12 V four-pin motherboard RGB header (MSI JRGB): fitted in place. Computer-generated illustration, not a photograph.

Fitted in place Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

12 V four-pin motherboard RGB header (MSI JRGB): original recognition drawing, not to scale.

Recognition drawing Original schematic, not to scale. Drawing review pending.

Image inspection / P347

See the view. Check its scope.

1 registered view for this reference. Different part examples are not automatically mates; all remain not to scale and independently unapproved.

Four contiguous positions in the JRGB1 source diagram. Original source-observed board-side contact-layout study; no housing specification, scale, pin functions or fit approval. (private workspace)

P347 / Source-observed physical study

12V RGB / JRGB1

MSI B550-A PRO JRGB1

Board-side plan layout, following the cited diagram orientation · Board header

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
INTERNAL SYSTEMS / HEADERS

12 V four-pin RGB and 5 V addressable RGB are not interchangeable

No. MSI explicitly distinguishes its 12 V four-pin JRGB and 5 V three-pin JRAINBOW headers and warns incorrect connection may damage components. A shared “RGB” label does not resolve supply voltage or addressing method, and the warning must remain visible before any hookup.

Conceptual role comparison: MSI JRGB / 12 V versus MSI JRAINBOW / 5 V. Wrong voltage or header can damage hardware. Not to scale, no pinout or mechanical mating dimensions.
Lighting: check the voltage first. Original qualitative role diagram; not mechanical artwork, not to scale or a wiring map. Source context S458.

Three checks before proceeding

  1. Disconnect power and read the exact motherboard/strip manuals.
  2. Confirm voltage, addressable mode, pin/arrow orientation and any controller.
  3. Never force or electrically bridge a 12 V header to a 5 V addressable load.

One mistake to avoid

Using an improvised adapter to power a 5 V strip from an unverified 12 V header.

Full technical reading, sources and related identities →

Claim-specific evidence remains in the canonical record. Concept diagrams do not show any safe wiring or mechanical mating geometry.

The useful distinction

Recognize it. Then verify it.

MSI documents its JRGB header as a four-pin 12 V connector for non-addressable RGB LED equipment, distinct from the five-volt addressable JRAINBOW family. [C347A]

MSI warns that connecting a five-volt LED strip to its twelve-volt JRGB header causes damage. [C347B]

B550-A PRO describes JRGB1 as a four-position 12V 5050 RGB-strip connection. [C347C]

MSI’s RGB-fan diagram separates the lighting lead from the system-fan connection. [C347D]

MSI warns that connecting a 5V LED strip to JRGB can damage the strip. [C347E]

PC internals · a documented check

Can a 5V ARGB lead go on a 12V RGB header?

Not on the MSI headers described here. JRGB is a 12V four-pin lighting connection; JRAINBOW is a 5V three-pin addressable connection. MSI warns that connecting a 5V strip to JRGB damages the strip. C347A · C348A · C347B

What the documentation establishes—and what still needs checking
CheckDocumented distinctionBoundary
MSI JRGB12V, four-pin lighting interface. C347AIt is not the 5V addressable output.
MSI JRAINBOW5V, three-pin addressable interface; the B550-A PRO drawing has a gap at position 3. C348A · C348DDo not generalize its gap or voltage to another maker’s three-pin connector.
Fan assemblyThe B550-A PRO RGB-fan illustration separates lighting and system-fan connections. C347DThe fan-motor lead and lighting lead are different paths.

Check these next

  1. Read the board and lighting-device manuals for voltage, header name and controller requirements.
  2. Distinguish the motor/control lead from the lighting lead on a combined fan assembly.
  3. Follow the maker’s power-off and disconnection instructions before changes; stop at a voltage mismatch.

Keep this limit: Do not connect a 5V strip to JRGB. No passive adapter, rewiring method or general cross-brand lighting approval is provided. C347B · C348B

Identify the documented form

Separate MSI JRGB lighting from addressable lighting and fan power.

  1. The documented JRGB designation is the non-addressable lighting family, distinct from JRAINBOW. S458 · S458
  2. MSI’s diagram separates the lighting lead from the system-fan connection. S591
Documented identity facts; exact part and variant scope remains with each value
Nominal contacts4 (MSI JRGB)S458Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.
Positions / cavity span4 (Claim C347C); 4 (MSI B550-A PRO JRGB1)S591 · S757Separate exact examples; retain each value’s source, role, axis and part scope. V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.
Populated contacts4 (MSI JRGB); 4 (MSI B550-A PRO JRGB1)S458 · S757Separate exact examples; retain each value’s source, role, axis and part scope. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. Exact named example MSI B550-A PRO JRGB1: Device-specific12V RGB header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. No2.54mmpitch inferred. Reference designator in diagram is not evidence of physical specimen markings.
Connector roleheader (MSI JRGB)S458Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.
Rows, pitch, dimensions, keying and view limits
Additional scoped facts; not a fabrication drawing or a mating approval
Contact rows1 (MSI B550-A PRO JRGB1)S757Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example MSI B550-A PRO JRGB1: Device-specific12V RGB header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. No2.54mmpitch inferred. Reference designator in diagram is not evidence of physical specimen markings.
Contact pitchNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Dimensions / axisNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Coupling / latchNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Keying / polarizationNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
View conventionMSI p.40 numbered header sketch, pin1left; single row of4. Cable rear orientation is outside this sketch. (MSI B550-A PRO JRGB1)S757Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example MSI B550-A PRO JRGB1: Device-specific12V RGB header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. No2.54mmpitch inferred. Reference designator in diagram is not evidence of physical specimen markings.
Contact gender / arrangementNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
MountingNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Shell / formNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
ManufacturerMSI (B550-A PRO JRGB1)S591Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.
SeriesJRGB (B550-A PRO JRGB1)S591Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.
Exact part / implementationB550-A PRO JRGB1 (B550-A PRO JRGB1)S591Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.
Recorded markingsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keep this limit: MSI warns that the lower-voltage strip connected to the higher-voltage JRGB header can be damaged. S458 · S591

Make the next check

Read the exact board’s JRGB label, voltage and accessory compatibility; follow its power-off instructions.

Existing source inspection and AI review remain distinct from independent technical review. A matching form does not establish a safe connection.

Recorded variant and source limits
  • Check the exact device manual before wiring or applying power.
  • MSI MAG B550 TOMAHAWK JRGB1~2: Per manual.
  • GIGABYTE B550 AORUS ELITE (AX) LED_C1/LED_C2 and LED_CPU (comparable 12 V RGB header, not MSI): Per manual.
  • MSI B550-A PRO JRGB1: MSI p.40 JRGB1 board-header sketch, pin 1 at left. Cable rear and other vendors are outside this source view.
Report a correction to this identification or view →

Bounded facts, visible unknowns

Specifications and limits

12 V four-pin motherboard RGB header (MSI JRGB) facts and limitations
Documented MSI JRGB formFour contacts; 12 V lighting category — not a universal wiring map [C347A]
Role and recognition scopeBoard header — MSI B550-A PRO JRGB1. Original qualitative study only; no wiring or fit approval. [C347C] [C347D] [C347E]
Mechanical dimensionsOnly manufacturer-described nominal family/footprint pitch is quoted in sourced text; no measured fabrication/tolerance drawing independently approved.
Engineering pinoutSource-checked engineering profile available; independent review pending. Open engineering profile →
Verified device listNot included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.

Switch the PC off, remove mains power, and confirm the header labels before attaching lighting equipment. Check both the motherboard’s header voltage and the LED product’s required voltage and pin allocation. Never mate a 5 V ARGB plug to a 12 V RGB port, even with a mechanical adapter.

Before you connect

What to check

  1. Switch the PC off, remove mains power, and confirm the header labels before attaching lighting equipment.
  2. Check both the motherboard’s header voltage and the LED product’s required voltage and pin allocation.
  3. Never mate a 5 V ARGB plug to a 12 V RGB port, even with a mechanical adapter.
Trace a supported connection class →

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
Wiring variant

MSI MAG B550 TOMAHAWK JRGB1~2

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Per manual.

  • P347 MSI JRGB — **Agree**: 1 +12 V, 2 G, 3 R, 4 B — Different MSI board manuals (MAG B550 TOMAHAWK versus B550-A PRO), with GIGABYTE LED_C as an additional non-MSI variant in A. Two MSI implementations do not establish every board's wiring.
  • MSI: up to 2 m of 5050 RGB strip (12V/G/R/B), max 3 A at 12 V.
  • Only one MSI manual was read; other MSI models were not checked.
12 V four-pin RGB header (MSI JRGB) engineering referencePer manual.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12V (device_specific)12: G (device_specific)23: R (device_specific)34: B (device_specific)4powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
MSI MAG B550 TOMAHAWK JRGB1~2 — source-scoped contact map
PinSignalWhat it doesStatus
1+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
2GControl, detection or configuration connection; check the source and device.Device-specific
Sources
3RControl, detection or configuration connection; check the source and device.Device-specific
Sources
4BControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

GIGABYTE B550 AORUS ELITE (AX) LED_C1/LED_C2 and LED_CPU (comparable 12 V RGB header, not MSI)

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Per manual.

  • P347 MSI JRGB — **Agree**: 1 +12 V, 2 G, 3 R, 4 B — Different MSI board manuals (MAG B550 TOMAHAWK versus B550-A PRO), with GIGABYTE LED_C as an additional non-MSI variant in A. Two MSI implementations do not establish every board's wiring.
  • GIGABYTE: 5050 strip (12V/G/R/B), max 2 A at 12 V, 2 m.
  • Only one MSI manual was read; other MSI models were not checked.
12 V four-pin RGB header (MSI JRGB) engineering referencePer manual.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: 12V (device_specific)12: G (device_specific)23: R (device_specific)34: B (device_specific)4powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
GIGABYTE B550 AORUS ELITE (AX) LED_C1/LED_C2 and LED_CPU (comparable 12 V RGB header, not MSI) — source-scoped contact map
PinSignalWhat it doesStatus
112VPower connection (12V). Check the specified supply.Device-specific
Sources
2GControl, detection or configuration connection; check the source and device.Device-specific
Sources
3RControl, detection or configuration connection; check the source and device.Device-specific
Sources
4BControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

MSI B550-A PRO JRGB1

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

MSI p.40 JRGB1 board-header sketch, pin 1 at left. Cable rear and other vendors are outside this source view.

  • P347 MSI JRGB — **Agree**: 1 +12 V, 2 G, 3 R, 4 B — Different MSI board manuals (MAG B550 TOMAHAWK versus B550-A PRO), with GIGABYTE LED_C as an additional non-MSI variant in A. Two MSI implementations do not establish every board's wiring.
  • The manual describes 12V/G/R/B 5050 RGB strips, maximum 3 A at 12 V and up to 2 m continuous strip. It does not specify a channel-drive schematic.
  • General current-sink topology, arbitrary strip/controller compatibility and other vendors’ mappings are unverified.
12 V four-pin RGB header (MSI JRGB) engineering referenceMSI p.40 JRGB1 board-header sketch, pin 1 at left. Cable rear and other vendors are outside this source view.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12V (device_specific)12: G (device_specific)23: R (device_specific)34: B (device_specific)4powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
MSI B550-A PRO JRGB1 — source-scoped contact map
PinSignalWhat it doesStatus
1+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
2GControl, detection or configuration connection; check the source and device.Device-specific
Sources
3RControl, detection or configuration connection; check the source and device.Device-specific
Sources
4BControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

Important boundary

This reference establishes only the specific manufacturer-documented family and example noted in the sources. It does not verify an arbitrary mating pair, cable orientation, electrical rating or device combination. Stop and consult original documents for the exact products.

Source-scoped V142 recognition check

MSI B550-A PRO JRGB1. Four contiguous positions in the JRGB1 source diagram. Lighting control is distinct from fan-motor control. Identify the lighting supply and header label; do not substitute an ARGB strip. Still unresolved: Strip/controller compatibility, total lighting load and proprietary lighting systems. See the internal-header field reference for source revision, observation limits and the comparison.

Your next step

Move from the form to the requirement.

Read the engineering reference Source-scoped details, orientation and explicit unknowns.Work through a connection Choose your task before deciding on a cable.Explore this evidence trail Inspect the claims and their dependencies. (private workspace)

The source trail

Evidence for this page

AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.

Back to first citation ↑
C347ASource checked · pending review

MSI identifies JRGB as a 12 V, four-pin motherboard lighting header.

MSI · Installation method for JRGB and JRAINBOW connectors on MSI motherboards ↗

Locator: JRGB connector; JRAINBOW connector; warning on voltage mismatch; motherboard manual check
Access: public page. Other LED headers and proprietary variants exist. No universal header assignment or exact LED current assumption.

S458: full source recordInspect review dependencies → (private workspace)

Claim scope: Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.. Next review due 2027-01-07.

Back to first citation ↑
C347BSource checked · pending review

MSI warns that connecting a five-volt LED strip to its twelve-volt JRGB header causes damage.

MSI · Installation method for JRGB and JRAINBOW connectors on MSI motherboards ↗

Locator: JRGB connector; JRAINBOW connector; warning on voltage mismatch; motherboard manual check
Access: public page. Other LED headers and proprietary variants exist. No universal header assignment or exact LED current assumption.

S458: full source recordInspect review dependencies → (private workspace)

Claim scope: Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.. Next review due 2027-01-07.

Back to first citation ↑
C347CSource checked · pending review

B550-A PRO describes JRGB1 as a four-position 12V 5050 RGB-strip connection.

MSI · MSI B550-A PRO User Guide, version 6.0 (2024/02) ↗

Locator: PDF pp.33, 36–38, 40–41; p.59 / printed ix revision history. Source diagrams visually inspected at zero-based pages 32,35,36,37,39,40,58.
Access: public pdf text. Observed document is not a real-hardware inspection, installed-device approval, wiring guide, current revision guarantee or manufacturing specification.

S591: full source recordInspect review dependencies → (private workspace)

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.. Next review due 2027-01-11.

Back to first citation ↑
C347DSource checked · pending review

MSI’s RGB-fan diagram separates the lighting lead from the system-fan connection.

MSI · MSI B550-A PRO User Guide, version 6.0 (2024/02) ↗

Locator: PDF pp.33, 36–38, 40–41; p.59 / printed ix revision history. Source diagrams visually inspected at zero-based pages 32,35,36,37,39,40,58.
Access: public pdf text. Observed document is not a real-hardware inspection, installed-device approval, wiring guide, current revision guarantee or manufacturing specification.

S591: full source recordInspect review dependencies → (private workspace)

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.. Next review due 2027-01-11.

Back to first citation ↑
C347ESource checked · pending review

MSI warns that connecting a 5V LED strip to JRGB can damage the strip.

MSI · MSI B550-A PRO User Guide, version 6.0 (2024/02) ↗

Locator: PDF pp.33, 36–38, 40–41; p.59 / printed ix revision history. Source diagrams visually inspected at zero-based pages 32,35,36,37,39,40,58.
Access: public pdf text. Observed document is not a real-hardware inspection, installed-device approval, wiring guide, current revision guarantee or manufacturing specification.

S591: full source recordInspect review dependencies → (private workspace)

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.. Next review due 2027-01-11.

Suggest a correction to this field note →

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

Candidate selection does not confirm the identity or capabilities of your physical item.

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 5 scoped claims · 0 sources with inspection/access flags.

Page scope: evidence_first_v103_pc_and_jst

Assessment 2026-10-22 · earliest scheduled source review 2027-01-07. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 2 source scopes, access limits and dates

S458 · Installation method for JRGB and JRAINBOW connectors on MSI motherboards

MSI · Unclassified publisher domain · inspected 2026-10-09 · due 2027-01-07

Within inspection window

Scoped support: Manufacturer-specific 12V 4-pin JRGB and 5V 3-pin JRAINBOW distinction, power-off and damage warning.

Not established / limitations: Other LED headers and proprietary variants exist. No universal header assignment or exact LED current assumption.

Locator: JRGB connector; JRAINBOW connector; warning on voltage mismatch; motherboard manual check

S591 · MSI B550-A PRO User Guide, version 6.0 (2024/02)

MSI · Unclassified publisher domain · inspected 2026-10-13 · due 2027-01-11

Within inspection window

Scoped support: Named B550-A PRO board header identities, diagram-level contact/key arrangements, control modes and RGB mismatch warnings.

Not established / limitations: Observed document is not a real-hardware inspection, installed-device approval, wiring guide, current revision guarantee or manufacturing specification.

Locator: PDF pp.33, 36–38, 40–41; p.59 / printed ix revision history. Source diagrams visually inspected at zero-based pages 32,35,36,37,39,40,58.

Trace 5 claims to their source records

C347A · P347

MSI identifies JRGB as a 12 V, four-pin motherboard lighting header.

Claim scope: Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.

Source links: S458 · Evidence trail → (private workspace)

C347B · P347

MSI warns that connecting a five-volt LED strip to its twelve-volt JRGB header causes damage.

Claim scope: Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval.

Source links: S458 · Evidence trail → (private workspace)

C347C · P347

B550-A PRO describes JRGB1 as a four-position 12V 5050 RGB-strip connection.

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.

Source links: S591 · Evidence trail → (private workspace)

C347D · P347

MSI’s RGB-fan diagram separates the lighting lead from the system-fan connection.

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.

Source links: S591 · Evidence trail → (private workspace)

C347E · P347

MSI warns that connecting a 5V LED strip to JRGB can damage the strip.

Claim scope: V142: named MSI B550-A PRO manual version 6.0 (2024/02) or explicitly identified Noctua family only. Role/recognition evidence, not generic wiring, safe mating, pinout approval, dimensions or installed-device certification.

Source links: S591 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.