E340 · Source-scoped pinout variants

HD Audio front-panel header — keyed 2×5 (Intel example) engineering reference

Named wiring from the pinout research; connector shape alone does not establish capabilities.

Open field note Source trail

Source checked · no independent review claimed · Fabrication approved: no

HD Audio front-panel 2x5 header (Intel) engineering reference original orientation schematic — Original pinout diagram; read the exact variant and view below. Not to scale.

Contact count

Not asserted

Source-scoped connector interface

Mating boundary

Shape is not the verdict.

Check the exact device and mating connector.

Orientation

How to read this profile

Read the exact variant view convention. Schematic layouts do not establish physical positions.

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Contact rows	2 (Source-described array; C346A); 2 (Source-described array; C346B); 2 (B550-A PRO:JAUD1)S456 · S457 · S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Manufacturer-specific family/physical identification only. No inferred device wiring, mating verification or installation approval. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
Contact pitch	2 mm Source-described pitch / centerline (Claim C346B)S457Recorded 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.
Connector role	PCB header (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
Keying / polarization	10positionoutlinewithpin8absent;9loadedpositions (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
Manufacturer	MSI (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
Series	B550-A PRO (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
Exact part / implementation	B550-A PRO:JAUD1 (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.
View convention	Published board-side connector diagram:odd1–9onlowerrow,even2–10onupperrow,lefttoright. Cablewire-sideisnotshown. (B550-A PRO:JAUD1)S757Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. B550-A PRO:JAUD1. Documented role: PCB header. IntelThinMiniITXRev1.2p.21frontaudioseparately states2.54mmpitch;thatoldnominalscopeisretained,notremeasuredhere.; No board label,partmanufacturerorUSB/audiointerchangeabilityinferredfromsame2x5outline.

Not recorded: Nominal contacts, Positions / cavity span, Populated contacts, Dimensions / axis, Contact gender / arrangement, Mounting, Coupling / latch, Shell / form, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits

Check the exact device manual before wiring or applying power.
MSI MAG B550 TOMAHAWK JAUD1 (HD Audio): Per manual.
GIGABYTE B550 AORUS ELITE (AX) F_AUDIO (High Definition audio): Per manual.
Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel audio header: Per Table 2-5.
Intel Thin Mini-ITX HD Audio: Intel Figure 2-5 board-header illustration as printed: absent position 8 is the upper contact in column four of five. Cable face versus wire-entry view is not explicitly labeled.
Intel Thin Mini-ITX passive AC’97: Intel Figure 2-5 board-header illustration as printed: absent position 8 is the upper contact in column four of five. Cable face versus wire-entry view is not explicitly labeled.
MSI B550-A PRO JAUD1: MSI p.33 board drawing: 2 upper left, 10 upper right, 1 lower left, 9 lower right; absent 8 in upper row. Cable rear not established.

Report a correction to these facts →

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.

Dark pinout view

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 variantMSI MAG B550 TOMAHAWK JAUD1 (HD Audio)

MSI MAG B550 TOMAHAWK JAUD1 (HD Audio)

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

View and evidence limits

Per manual.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
Intel's HD Audio front-panel header table (in older FPIO editions, e.g. v1.3 2005, or Intel desktop board TPS documents) was not found on an Intel host; only mirrors were located and not used. Intel's own HD Audio signal names are therefore unverified.
Intel FPIO rev 1.1 header Table 2-5 has pin 2 AUD_GND / pin 4 AUD_VCC, but cable Table 4-1 has pin 2 AUD_VCC / pin 4 AUD_GND; those two rows are marked unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

MSI MAG B550 TOMAHAWK JAUD1 (HD Audio) — source-scoped contact map
Pin	Signal	What it does	Status
1	MIC L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
2	Ground	Ground reference and return.	Device-specific Sources
3	MIC R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
4	NC	Not connected or absent in this named wiring.	Not connected Sources
5	Head Phone R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
6	MIC Detection	Control, detection or configuration connection; check the source and device.	Device-specific Sources
7	SENSE_SEND	Control, detection or configuration connection; check the source and device.	Device-specific Sources
8	No Pin	Not connected or absent in this named wiring.	Not connected Sources
9	Head Phone L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
10	Head Phone Detection	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S761 · Micro-Star International (MSI) · MAG B550 TOMAHAWK Motherboard User Guide (multilingual)
No revision printed; PDF creation date 2023-12-26 (file MAGB550TOMAHAWK.pdf) · English section, 'JAUD1: Front Audio Connector' table, printed p. 19

GIGABYTE B550 AORUS ELITE (AX) F_AUDIO (High Definition audio)

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

View and evidence limits

Per manual.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
Intel's HD Audio front-panel header table (in older FPIO editions, e.g. v1.3 2005, or Intel desktop board TPS documents) was not found on an Intel host; only mirrors were located and not used. Intel's own HD Audio signal names are therefore unverified.
Intel FPIO rev 1.1 header Table 2-5 has pin 2 AUD_GND / pin 4 AUD_VCC, but cable Table 4-1 has pin 2 AUD_VCC / pin 4 AUD_GND; those two rows are marked unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

GIGABYTE B550 AORUS ELITE (AX) F_AUDIO (High Definition audio) — source-scoped contact map
Pin	Signal	What it does	Status
1	MIC2_L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
2	GND	Ground reference and return.	Device-specific Sources
3	MIC2_R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
4	NC	Not connected or absent in this named wiring.	Not connected Sources
5	LINE2_R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
6	Sense	Control, detection or configuration connection; check the source and device.	Device-specific Sources
7	FAUDIO_JD	Control, detection or configuration connection; check the source and device.	Device-specific Sources
8	No Pin	Not connected or absent in this named wiring.	Not connected Sources
9	LINE2_L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
10	Sense	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S762 · GIGA-BYTE Technology · B550 AORUS ELITE / B550 AORUS ELITE AX User's Manual
Rev. 1002, 12ME-B55AELT-1002R (copyright 2020) · Chapter 1, item 12) F_AUDIO (Front Panel Audio Header), High Definition audio table, printed p. 19

Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel aud…

Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel audio header

View and evidence limits

Per Table 2-5.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
This is NOT the HD Audio assignment; it is recorded separately because it is the only Intel-published front-panel audio table retrieved. Do not merge with the HD Audio variants.
Intel's HD Audio front-panel header table (in older FPIO editions, e.g. v1.3 2005, or Intel desktop board TPS documents) was not found on an Intel host; only mirrors were located and not used. Intel's own HD Audio signal names are therefore unverified.
Intel FPIO rev 1.1 header Table 2-5 has pin 2 AUD_GND / pin 4 AUD_VCC, but cable Table 4-1 has pin 2 AUD_VCC / pin 4 AUD_GND; those two rows are marked unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel audio header — source-scoped contact map
Pin	Signal	What it does	Status
1	AUD_MIC	Control, detection or configuration connection; check the source and device.	Single source Sources
2	Not confirmed	No settled assignment. Do not wire from this row.	Unverified Sources
3	AUD_MIC_BIAS	Control, detection or configuration connection; check the source and device.	Single source Sources
4	Not confirmed	No settled assignment. Do not wire from this row.	Unverified Sources
5	AUD_FPOUT_R	Control, detection or configuration connection; check the source and device.	Single source Sources
6	AUD_RET_R	Control, detection or configuration connection; check the source and device.	Single source Sources
7	HP_ON	Control, detection or configuration connection; check the source and device.	Single source Sources
8	KEY	Not connected or absent in this named wiring.	Not connected Sources
9	AUD_FPOUT_L	Control, detection or configuration connection; check the source and device.	Single source Sources
10	AUD_RET_L	Control, detection or configuration connection; check the source and device.	Single source Sources

Sources (1)

S839 · Intel Corporation · Front Panel I/O Connectivity Design Guide
Document 600569, Revision 1.1, July 2018 · Section 2.3.5, Table 2-5 Front Panel Audio Header Signal Names, printed p. 18; compare Table 4-1 Audio Cable and Connector Pin Assignments, printed p. 26

Intel Thin Mini-ITX HD Audio

View and evidence limits

Intel Figure 2-5 board-header illustration as printed: absent position 8 is the upper contact in column four of five. Cable face versus wire-entry view is not explicitly labeled.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
Nominal 2.54 mm pitch applies to this guide.
Passive AC’97 pin 7 has no usable function. Actual detection behavior, other boards/pitches, proprietary harnesses and cable-rear numeric layouts are unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Intel Thin Mini-ITX HD Audio — source-scoped contact map
Pin	Signal	What it does	Status
1	PORT 1L	Control, detection or configuration connection; check the source and device.	Single source Sources
2	GND	Ground reference and return.	Single source Sources
3	PORT 1R	Control, detection or configuration connection; check the source and device.	Single source Sources
4	PRESENCE#	Control, detection or configuration connection; check the source and device.	Single source Sources
5	PORT 2R	Control, detection or configuration connection; check the source and device.	Single source Sources
6	SENSE1 RETURN	Control, detection or configuration connection; check the source and device.	Single source Sources
7	SENSE SEND	Control, detection or configuration connection; check the source and device.	Single source Sources
8	KEY	Not connected or absent in this named wiring.	Not connected Sources
9	PORT 2L	Control, detection or configuration connection; check the source and device.	Single source Sources
10	SENSE2 RETURN	Control, detection or configuration connection; check the source and device.	Single source Sources

Sources (1)

S840 · Intel Corporation · Thin Mini-ITX Based PC System Design Guide
Revision 1.2, December 2012 · printed/PDF pp.21–22, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-6: HD Audio Front Panel Audio Header Pin-Out

Intel Thin Mini-ITX passive AC’97

View and evidence limits

Intel Figure 2-5 board-header illustration as printed: absent position 8 is the upper contact in column four of five. Cable face versus wire-entry view is not explicitly labeled.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
Table 2-5 retains PRESENCE# at pin 4 despite its Passive AC’97 title. This exact guide-specific assignment is preserved, not generalized to every AC’97 implementation.
Passive AC’97 pin 7 has no usable function. Actual detection behavior, other boards/pitches, proprietary harnesses and cable-rear numeric layouts are unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Intel Thin Mini-ITX passive AC’97 — source-scoped contact map
Pin	Signal	What it does	Status
1	MIC	Control, detection or configuration connection; check the source and device.	Single source Sources
2	AUD_GND	Control, detection or configuration connection; check the source and device.	Single source Sources
3	MIC_BIAS	Control, detection or configuration connection; check the source and device.	Single source Sources
4	PRESENCE#	Control, detection or configuration connection; check the source and device.	Single source Sources
5	FP_OUT_R	Control, detection or configuration connection; check the source and device.	Single source Sources
6	AUD_GND	Control, detection or configuration connection; check the source and device.	Single source Sources
7	Not confirmed	No settled assignment. Do not wire from this row.	Unverified Sources
8	KEY	Not connected or absent in this named wiring.	Not connected Sources
9	FP_OUT_L	Control, detection or configuration connection; check the source and device.	Single source Sources
10	AUD_GND	Control, detection or configuration connection; check the source and device.	Single source Sources

Sources (1)

S840 · Intel Corporation · Thin Mini-ITX Based PC System Design Guide
Revision 1.2, December 2012 · printed/PDF p.21, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-5: Passive AC’97 Front Panel Audio Header Pin-Out

MSI B550-A PRO JAUD1

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

View and evidence limits

MSI p.33 board drawing: 2 upper left, 10 upper right, 1 lower left, 9 lower right; absent 8 in upper row. Cable rear not established.

P346 HD Audio 2x5 header — **Agree** for MSI; **partial across Intel variants** — Different MSI manuals agree on all ten positions, including pin 4 NC. B's Intel Thin Mini-ITX HD Audio table assigns 4 PRESENCE# and supplies Intel HD Audio evidence absent in A. A's older Intel FPIO legacy-audio table and B's passive AC'97 table are distinct implementations. A's contradictory legacy pins 2/4 stay unverified; B's reserved passive pin 7 stays unverified. No shared document across passes.
MSI pin 4 is NC while Intel HD Audio pin 4 is PRESENCE#. They remain separate.
Passive AC’97 pin 7 has no usable function. Actual detection behavior, other boards/pitches, proprietary harnesses and cable-rear numeric layouts are unverified.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

MSI B550-A PRO JAUD1 — source-scoped contact map
Pin	Signal	What it does	Status
1	MIC L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
2	Ground	Ground reference and return.	Device-specific Sources
3	MIC R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
4	NC	Not connected or absent in this named wiring.	Not connected Sources
5	Head Phone R	Control, detection or configuration connection; check the source and device.	Device-specific Sources
6	MIC Detection	Control, detection or configuration connection; check the source and device.	Device-specific Sources
7	SENSE_SEND	Control, detection or configuration connection; check the source and device.	Device-specific Sources
8	No Pin	Not connected or absent in this named wiring.	Not connected Sources
9	Head Phone L	Control, detection or configuration connection; check the source and device.	Device-specific Sources
10	Head Phone Detection	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S757 · Micro-Star International (MSI) · B550-A PRO User Guide
Version 6.0, 2024/02, First release (Revision History, PDF p.59) · printed/PDF p.33, JAUD1: Front Audio Connector, numbered drawing and Pin/Signal Name table

Unknowns stay unknown.

Check the exact device manual before wiring or applying power.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C810Rsource checked

MSI MAG B550 TOMAHAWK JAUD1 (HD Audio): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Micro-Star International (MSI) · MAG B550 TOMAHAWK Motherboard User Guide (multilingual) ↗
English section, 'CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: Fan Connectors', PWM Mode and DC Mode pin definition tables, printed p. 23; English section, 'CPU_PWR1, ATX_PWR1: Power Connectors', CPU_PWR1 table, printed p. 20; English section, 'JAUD1: Front Audio Connector' table, printed p. 19; English section, 'JRAINBOW1~2: Addressable RGB LED connectors' table, printed p. 27; English section, 'JRGB1~2: RGB LED connectors' table, printed p. 26; English section, 'JUSB1~2: USB 2.0 Connectors' table, printed p. 22; English section, Overview of Components, 'CPU_PWR1, ATX_PWR1: Power Connectors', ATX_PWR1 table, printed p. 20 · Source scope and unresolved evidence are preserved in the engineering variant.

C810Ssource checked

GIGABYTE B550 AORUS ELITE (AX) F_AUDIO (High Definition audio): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

GIGA-BYTE Technology · B550 AORUS ELITE / B550 AORUS ELITE AX User's Manual ↗
Chapter 1, item 1/2) ATX_12V/ATX, 'ATX:' pin table, printed p. 15; Chapter 1, item 1/2) ATX_12V/ATX, 'ATX_12V:' pin table, printed p. 15; Chapter 1, item 12) F_AUDIO (Front Panel Audio Header), High Definition audio table, printed p. 19; Chapter 1, item 14) F_USB1/F_USB2 (USB 2.0/1.1 Headers) table, printed p. 20; Chapter 1, item 3/4) CPU_FAN/SYS_FAN1/2/3 (Fan Headers) pin table, printed p. 15; item 5) CPU_OPT, printed p. 16; Chapter 1, item 7) D_LED1/D_LED2 (Addressable LED Strip Headers), printed p. 16; Chapter 1, item 8) LED_C1/LED_C2 (RGB LED Strip Headers), printed p. 17; item 6) LED_CPU, printed p. 16 · Source scope and unresolved evidence are preserved in the engineering variant.

C810Tsource checked

Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel audio header: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · Front Panel I/O Connectivity Design Guide ↗
Section 2.3.5, Table 2-5 Front Panel Audio Header Signal Names, printed p. 18; compare Table 4-1 Audio Cable and Connector Pin Assignments, printed p. 26; Section 3.2.4, Table 3-1 Front Panel USB Connector, printed p. 20 (Figure 3-1 header design) · Source scope and unresolved evidence are preserved in the engineering variant.

C810Usource checked

Intel Thin Mini-ITX HD Audio: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · Thin Mini-ITX Based PC System Design Guide ↗
printed/PDF p.21, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-5: Passive AC’97 Front Panel Audio Header Pin-Out; printed/PDF pp.21–22, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-6: HD Audio Front Panel Audio Header Pin-Out; printed/PDF pp.24–25, section 2.5.1 Front Panel Dual USB 2.0 Header, Figure 2-8 and Table 2-9 · Source scope and unresolved evidence are preserved in the engineering variant.

C810Vsource checked

Intel Thin Mini-ITX passive AC’97: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

C810Wsource checked

MSI B550-A PRO JAUD1: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Micro-Star International (MSI) · B550-A PRO User Guide ↗
printed/PDF p.33, JAUD1: Front Audio Connector, numbered drawing and Pin/Signal Name table; printed/PDF p.34, CPU_PWR1, ATX_PWR1: Power Connectors, ATX_PWR1, numbered drawing and Pin/Signal Name table; printed/PDF p.34, CPU_PWR1, ATX_PWR1: Power Connectors, CPU_PWR1, numbered drawing and Pin/Signal Name table; printed/PDF p.37, JUSB1~2: USB 2.0 Connectors, numbered drawing and Pin/Signal Name table; printed/PDF p.38, CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: Fan Connectors, PWM Mode and DC Mode pin definition tables and mode explanation, numbered drawing and Pin/Signal Name table; printed/PDF p.40, JRGB1: RGB LED connector, numbered drawing and Pin/Signal Name table; printed/PDF p.41, JRAINBOW1~2: Addressable RGB LED connectors, numbered drawing and Pin/Signal Name table · Source scope and unresolved evidence are preserved in the engineering variant.

5 source records support this profile. No independent engineering review or hardware validation is claimed.

Evidence behind this page

Scope first. Source second. Approval separate.

5 linked sources · 6 scoped claims · 0 sources with inspection/access flags.

Page scope: Original schematic; not to scale and not fabrication approval.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-18. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 5 source scopes, access limits and dates

S757 · B550-A PRO User Guide

Micro-Star International (MSI) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

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

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: printed/PDF p.33, JAUD1: Front Audio Connector, numbered drawing and Pin/Signal Name table; printed/PDF p.34, CPU_PWR1, ATX_PWR1: Power Connectors, ATX_PWR1, numbered drawing and Pin/Signal Name table; printed/PDF p.34, CPU_PWR1, ATX_PWR1: Power Connectors, CPU_PWR1, numbered drawing and Pin/Signal Name table; printed/PDF p.37, JUSB1~2: USB 2.0 Connectors, numbered drawing and Pin/Signal Name table; printed/PDF p.38, CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: Fan Connectors, PWM Mode and DC Mode pin definition tables and mode explanation, numbered drawing and Pin/Signal Name table; printed/PDF p.40, JRGB1: RGB LED connector, numbered drawing and Pin/Signal Name table; printed/PDF p.41, JRAINBOW1~2: Addressable RGB LED connectors, numbered drawing and Pin/Signal Name table

S761 · MAG B550 TOMAHAWK Motherboard User Guide (multilingual)

Micro-Star International (MSI) · Unclassified publisher domain · inspected 2026-10-20 · due 2027-01-18

Within inspection window

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

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: English section, 'CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: Fan Connectors', PWM Mode and DC Mode pin definition tables, printed p. 23; English section, 'CPU_PWR1, ATX_PWR1: Power Connectors', CPU_PWR1 table, printed p. 20; English section, 'JAUD1: Front Audio Connector' table, printed p. 19; English section, 'JRAINBOW1~2: Addressable RGB LED connectors' table, printed p. 27; English section, 'JRGB1~2: RGB LED connectors' table, printed p. 26; English section, 'JUSB1~2: USB 2.0 Connectors' table, printed p. 22; English section, Overview of Components, 'CPU_PWR1, ATX_PWR1: Power Connectors', ATX_PWR1 table, printed p. 20

S762 · B550 AORUS ELITE / B550 AORUS ELITE AX User's Manual

GIGA-BYTE Technology · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

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

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: Chapter 1, item 1/2) ATX_12V/ATX, 'ATX:' pin table, printed p. 15; Chapter 1, item 1/2) ATX_12V/ATX, 'ATX_12V:' pin table, printed p. 15; Chapter 1, item 12) F_AUDIO (Front Panel Audio Header), High Definition audio table, printed p. 19; Chapter 1, item 14) F_USB1/F_USB2 (USB 2.0/1.1 Headers) table, printed p. 20; Chapter 1, item 3/4) CPU_FAN/SYS_FAN1/2/3 (Fan Headers) pin table, printed p. 15; item 5) CPU_OPT, printed p. 16; Chapter 1, item 7) D_LED1/D_LED2 (Addressable LED Strip Headers), printed p. 16; Chapter 1, item 8) LED_C1/LED_C2 (RGB LED Strip Headers), printed p. 17; item 6) LED_CPU, printed p. 16

S839 · Front Panel I/O Connectivity Design Guide

Intel Corporation · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

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

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: Section 2.3.5, Table 2-5 Front Panel Audio Header Signal Names, printed p. 18; compare Table 4-1 Audio Cable and Connector Pin Assignments, printed p. 26; Section 3.2.4, Table 3-1 Front Panel USB Connector, printed p. 20 (Figure 3-1 header design)

S840 · Thin Mini-ITX Based PC System Design Guide

Intel Corporation · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

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

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: printed/PDF p.21, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-5: Passive AC’97 Front Panel Audio Header Pin-Out; printed/PDF pp.21–22, section 2.3.1 Front Panel Audio, Figure 2-5 and Table 2-6: HD Audio Front Panel Audio Header Pin-Out; printed/PDF pp.24–25, section 2.5.1 Front Panel Dual USB 2.0 Header, Figure 2-8 and Table 2-9

Trace 6 claims to their source records

C810R · P346

MSI MAG B550 TOMAHAWK JAUD1 (HD Audio): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S761 · Evidence trail → (private workspace)

C810S · P346

GIGABYTE B550 AORUS ELITE (AX) F_AUDIO (High Definition audio): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S762 · Evidence trail → (private workspace)

C810T · P346

Intel FPIO Design Guide rev 1.1 legacy (AC'97-style) front-panel audio header: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S839 · Evidence trail → (private workspace)

C810U · P346

Intel Thin Mini-ITX HD Audio: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S840 · Evidence trail → (private workspace)

C810V · P346

Intel Thin Mini-ITX passive AC’97: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S840 · Evidence trail → (private workspace)

C810W · P346

MSI B550-A PRO JAUD1: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S757 · Evidence trail → (private workspace)

Prepare this page for review →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.