Side by side

M.2 card edge vs PCIe x4 add-in-card edge

Separate an M.2 module from a PCIe expansion-card edge. A named adapter can connect particular endpoints, but the physical shape does not establish drive protocol, host lanes or boot support.

M.2 card edge interface: original recognition drawing, not to scale — P030 · ConnectorM.2 card edge interface

Computer-generated illustration, not a photograph. — P296 · ConnectorPCI Express x4 64-position card-edge connector

How they differ

M.2 card edge interface Record the module length, key arrangement and exact host-slot specification. The schematic is illustrative: neither its length nor contact spacing is an engineering measurement.
PCI Express x4 64-position card-edge connector Confirm the PCIe x4 card-edge form and 64-position variant, then verify generation, lane wiring and device support from the host documentation.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	M.2 card edge interface	PCI Express x4 64-position card-edge connector
Type	Connector	Connector
Family	Storage	Storage
Shape	card edge	card edge
Nominal contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	64S337Source-backed nominal position/contact count for identification: 64. Not a pinout or manufacturing drawing.
Positions / cavity span	67 (TE C-2199230 representative M-key socket)S594Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.	64 (Claim C296A); 64 (Claim C296B)S337 · S357Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred. Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred.
Contact rows	2 (1-2199230-5)S872Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	card-edgeS033 · S426 · S427 · S427 · S427 · S429 · S429Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Keyed module card-edge interface family	card-edge; socketS337 · S357 · S337Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. PCI Express x4 card-edge connector example Named series only, not every family part: Amphenol PCI Express Gen3 64-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
Key distinction	M.2 is a form-factor family; NVMe describes a different layer.	The x4 mechanical connector form does not establish PCIe generation, active lane width, bifurcation or platform support.

Full evidence ledger and sources ↓

Illustrations are computer-generated with prior AI visual review; independent technical and rights review pending. A comparison is not a compatibility verdict.

This comparison stays within one evidence layer.

All selected records are Connector records. Similar layer does not mean compatible, interchangeable or safe to mate.

Families represented: Storage

Look here first

Spot the difference.

Read the views →

Not a size comparison. Illustrations fit the same display boxes; their physical dimensions are not shown to a common scale. No mating or compatibility verdict follows.

P030 / Module-face schematic

M.2 card edge interface

Card/module illustration

Visible clue: Board outline with mounting hole at the left and contact edge at the right

The simplified edge fingers and gap are not a verified key pattern.

Still check: Do not assign B, M or B+M keying, a module size or NVMe support from this generic board.

PCIe x4 (64-position) slot — top-facing keyed motherboard expansion slot schematic; no pinout or measured geometry; review pending

P296 / Top-facing conceptual slot opening

PCI Express x4 64-position card-edge connector

Motherboard-side receptacle / expansion slot

Visible clue: Same family of keyed slot, with a longer trailing section than the x1 variant.

Still check: Source-supported family key and position-class recognition. Stylized channel; hatching is not the contact arrangement, and there are no real tolerances, pins or measured dimensions.

The reference ledger

Read the same question across.

2 selected records · 20 fields
No score. No compatibility verdict.

On a narrow screen, scroll the table sideways or open the field-by-field reading view below. Illustrations are not a size comparison.

Comparison of selected field notes; source links accompany each documented specification
What you are comparing	P030 / ConnectorM.2 card edge interface Identification schematic · not to scale · drawing review pending	P296 / ConnectorPCI Express x4 64-position card-edge connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	M.2 is a form-factor family; NVMe describes a different layer.	The x4 mechanical connector form does not establish PCIe generation, active lane width, bifurcation or platform support.
Nominal contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	64S337Source-backed nominal position/contact count for identification: 64. Not a pinout or manufacturing drawing.
Positions / cavity span	67 (TE C-2199230 representative M-key socket)S594Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.	64 (Claim C296A); 64 (Claim C296B)S337 · S357Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred. Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred.
Populated contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	2 (1-2199230-5)S872Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact pitch	0.5 mm manufacturer-reported centerline or mating-interface pitch (1-2199230-5)S872Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.	1 mm Contact pitch (Recorded example component); 1 mm Source-described pitch / centerline (Claim C296B); 1 mm centerlineS357 · S337Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; PCI Express x4 card-edge connector example Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred. Named series only, not every family part: Amphenol PCI Express Gen3 64-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
Dimensions / axis	22 mm Module format width (2242 module format); 42 mm Module format length (2242 module format); 22 mm Module format width (2280 module format); 80 mm Module format length (2280 module format); 21.9 mm connector length (1-2199230-5); 8.7 mm connector width (1-2199230-5); 4.2 mm connector height (1-2199230-5)S426 · S872Separate exact examples; retain each value’s source, role, axis and part scope. Article 000144170 version 12, Figure 1 examples (b)–(d); no tolerance, connector geometry or clearance inferred. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	card-edgeS033 · S426 · S427 · S427 · S427 · S429 · S429Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Keyed module card-edge interface family	card-edge; socketS337 · S357 · S337Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. PCI Express x4 card-edge connector example Named series only, not every family part: Amphenol PCI Express Gen3 64-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
Coupling / latch	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Keying / polarization	A-key (TE C-2199230 B4 part table); B-key (TE C-2199230 B4 part table); E-key (TE C-2199230 B4 part table); M-key (TE C-2199230 B4 part table)S594Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Physical checks	Keying, length, mounting and clearanceC030A	Not an equivalent field
Protocol support	Requires host and module evidenceC030A	Not an equivalent field
Nominal format, not mating dimensions	2242 and 2280 examples label nominal module width and length; check the exact slot and standoff.C030B · C030D	Not an equivalent field
Key, interface and firmware	A matching B/M/B+M key is not a SATA, PCIe, NVMe, lane-count or boot guarantee.C030C · C030E	Not an equivalent field
Exact-host example	PRIME B550-PLUS AC-HES M.2_1 and M.2_2 have documented CPU/slot-dependent modes.C030F · C030G	Not an equivalent field
Source-scoped role and recognition	Read the component role before the key name. An offset key interrupts the socket opening.C030J · C030K · C030L	Not an equivalent field
M.2 protocol mismatch	Host socket and SSD must support the same SATA or PCIe storage transport, beyond physical fit.C030M	Not an equivalent field
Documented identification	Not an equivalent field	Amphenol identifies the standard PCI Express x4 card-edge connector form with 64 positions/contacts in its PCIe connector range.C296A
Evidence	C030A,C030B,C030C,C030D,C030E,C030F,C030G,C030H,C030I,C030J,C030K,C030L,C030M → Independent review pending	C296A → Independent review pending

Read field by field — no sideways scrolling

The same selected records, fields, values and source links as the table. Missing fields remain non-equivalent; no values are merged.

Layer

M.2 card edge interfaceP030 / Connector: Connector
PCI Express x4 64-position card-edge connectorP296 / Connector: Connector

Key distinction

M.2 card edge interfaceP030 / Connector: M.2 is a form-factor family; NVMe describes a different layer.
PCI Express x4 64-position card-edge connectorP296 / Connector: The x4 mechanical connector form does not establish PCIe generation, active lane width, bifurcation or platform support.

Nominal contacts

M.2 card edge interfaceP030 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
PCI Express x4 64-position card-edge connectorP296 / Connector: 64S337Source-backed nominal position/contact count for identification: 64. Not a pinout or manufacturing drawing.

Positions / cavity span

M.2 card edge interfaceP030 / Connector: 67 (TE C-2199230 representative M-key socket)S594Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.
PCI Express x4 64-position card-edge connectorP296 / Connector: 64 (Claim C296A); 64 (Claim C296B)S337 · S357Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred. Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred.

Populated contacts

M.2 card edge interfaceP030 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
PCI Express x4 64-position card-edge connectorP296 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

M.2 card edge interfaceP030 / Connector: 2 (1-2199230-5)S872Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.
PCI Express x4 64-position card-edge connectorP296 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

M.2 card edge interfaceP030 / Connector: 0.5 mm manufacturer-reported centerline or mating-interface pitch (1-2199230-5)S872Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.
PCI Express x4 64-position card-edge connectorP296 / Connector: 1 mm Contact pitch (Recorded example component); 1 mm Source-described pitch / centerline (Claim C296B); 1 mm centerlineS357 · S337Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; PCI Express x4 card-edge connector example Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred. Named series only, not every family part: Amphenol PCI Express Gen3 64-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.

Dimensions / axis

M.2 card edge interfaceP030 / Connector: 22 mm Module format width (2242 module format); 42 mm Module format length (2242 module format); 22 mm Module format width (2280 module format); 80 mm Module format length (2280 module format); 21.9 mm connector length (1-2199230-5); 8.7 mm connector width (1-2199230-5); 4.2 mm connector height (1-2199230-5)S426 · S872Separate exact examples; retain each value’s source, role, axis and part scope. Article 000144170 version 12, Figure 1 examples (b)–(d); no tolerance, connector geometry or clearance inferred. Exact named example 1-2199230-5: M-key M.2 board connector. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Connector envelope is distinct from existing22x42/80mm card dimensions; no NVMe/SATA capability guarantee.
PCI Express x4 64-position card-edge connectorP296 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

M.2 card edge interfaceP030 / Connector: card-edgeS033 · S426 · S427 · S427 · S427 · S429 · S429Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Keyed module card-edge interface family
PCI Express x4 64-position card-edge connectorP296 / Connector: card-edge; socketS337 · S357 · S337Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. PCI Express x4 card-edge connector example Named series only, not every family part: Amphenol PCI Express Gen3 64-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.

Coupling / latch

M.2 card edge interfaceP030 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
PCI Express x4 64-position card-edge connectorP296 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

M.2 card edge interfaceP030 / Connector: A-key (TE C-2199230 B4 part table); B-key (TE C-2199230 B4 part table); E-key (TE C-2199230 B4 part table); M-key (TE C-2199230 B4 part table)S594Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.
PCI Express x4 64-position card-edge connectorP296 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Physical checks

M.2 card edge interfaceP030 / Connector: Keying, length, mounting and clearanceC030A
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Protocol support

M.2 card edge interfaceP030 / Connector: Requires host and module evidenceC030A
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Nominal format, not mating dimensions

M.2 card edge interfaceP030 / Connector: 2242 and 2280 examples label nominal module width and length; check the exact slot and standoff.C030B · C030D
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Key, interface and firmware

M.2 card edge interfaceP030 / Connector: A matching B/M/B+M key is not a SATA, PCIe, NVMe, lane-count or boot guarantee.C030C · C030E
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Exact-host example

M.2 card edge interfaceP030 / Connector: PRIME B550-PLUS AC-HES M.2_1 and M.2_2 have documented CPU/slot-dependent modes.C030F · C030G
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Source-scoped role and recognition

M.2 card edge interfaceP030 / Connector: Read the component role before the key name. An offset key interrupts the socket opening.C030J · C030K · C030L
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

M.2 protocol mismatch

M.2 card edge interfaceP030 / Connector: Host socket and SSD must support the same SATA or PCIe storage transport, beyond physical fit.C030M
PCI Express x4 64-position card-edge connectorP296 / Connector: Not an equivalent field

Documented identification

M.2 card edge interfaceP030 / Connector: Not an equivalent field
PCI Express x4 64-position card-edge connectorP296 / Connector: Amphenol identifies the standard PCI Express x4 card-edge connector form with 64 positions/contacts in its PCIe connector range.C296A

Evidence

M.2 card edge interfaceP030 / Connector: C030A,C030B,C030C,C030D,C030E,C030F,C030G,C030H,C030I,C030J,C030K,C030L,C030M →
Independent review pending
PCI Express x4 64-position card-edge connectorP296 / Connector: C296A →
Independent review pending

Your next step

Use the distinction in context.

Open the field notes Read source-linked facts and limitations.Compare another pair Start from a common confusion.Check a connection A comparison is not a compatibility verdict.

Continue the distinction

Compare next

Browse every comparison →

M.2 card edge vs SATA data connectorM.2 is a keyed module interface, not another name for the seven-pin SATA data connector. An M.2 module may use SATA, but its exact host support and physical connection still differ.Mini PCI Express/mSATA versus M.2Is the host using the older 52-position Mini PCIe/mSATA connector family or an M.2 keyed card-edge form? Similar internal-card roles do not make them physically or electrically interchangeable.PCIe x1 versus x4 card-edge connectorsIs the slot/form the 36-position x1 or 64-position x4 mechanical variant? Mechanical width does not establish PCIe generation or active lanes.Mini-SAS HD vs OCuLinkMini-SAS HD and OCuLink are different connector families used in high-speed internal links. Physical resemblance is not evidence of mating or protocol compatibility.Mini-SAS HD vs SlimSASMini-SAS HD and SlimSAS are different internal high-density connector families. Match the named SFF form and system documentation, not the general SAS label.SATA data vs SATA powerSATA data and SATA power are separate connectors with different roles and contact counts. Sharing the SATA name does not make them substitutes.

Adjust this comparison

Add a field note

Evidence behind this page

Scope first. Source second. Approval separate.

7 linked sources · 14 scoped claims · 0 sources with inspection/access flags.

Page scope: Evidence behind the compared records; the editorial comparison still needs separate review.

Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 7 source scopes, access limits and dates

S033 · SSD FAQ

Kingston · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: M.2 physical fit does not establish SATA / PCIe / NVMe support.

Not established / limitations: Historical throughput examples and broad product marketing are not used.

Locator: M.2 physical sizes, B/M keys, host compatibility and hot-plug questions

S337 · Amphenol PCI Express card-edge series — x4 64-position form

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Manufacturer series reference for the PCI Express x4 mechanical/contact-count form only.

Not established / limitations: Source-backed identification does not establish universal wiring, protocol generation, device compatibility, safe installation or fabrication approval.

Locator: Product-series description and standard pin-count/lane-width summary

S426 · Differences Between M.2 Cards: M.2 Slots, Keys, Sizes and Types

Dell · Manufacturer / product-owner domain · inspected 2026-10-08 · due 2027-01-06

Within inspection window

Scoped support: Nominal module-format examples 2242 and 2280; not connector mating dimensions.

Not established / limitations: The general key/capability table is not adopted as a universal host rule. No Dell artwork, measured geometry, tolerance, contact assignment or exact-host approval is supplied.

Locator: Article 000144170, version 12; last modified 30 September 2026. M.2 Cards section, Figure 1 examples (b), (c) and (d).

S427 · What is M.2? Keys and Sockets Explained

ATP Electronics · Unclassified publisher domain · inspected 2026-10-08 · due 2027-01-06

Within inspection window

Scoped support: Separating mechanical key/format, wired interface, lane implementation, clearance and firmware requirements.

Not established / limitations: Manufacturer explanatory guide, not an inspected PCI-SIG M.2 standard. Numeric notch/contact positions, marketing throughput, capacity and universal key-to-protocol rules are not adopted. No third-party illustrations are copied.

Locator: Published 22 June 2026; sections on keying versus wiring, compatibility checklist, mechanical clearance and firmware. No numbered revision stated.

S429 · PRIME B550-PLUS AC-HES User’s Manual

ASUS · Manufacturer / product-owner domain · inspected 2026-10-08 · due 2027-01-06

Within inspection window

Scoped support: Selected storage and PCIe slot roles for PRIME B550-PLUS AC-HES only, with CPU, slot population and SATA-sharing conditions.

Not established / limitations: Not the ordinary PRIME B550-PLUS or every B550 motherboard. Selected internal groups only; no current BIOS verification, boot qualification, entire port inventory or hardware test. Manual conditions must not be generalized.

Locator: E18712, First Edition, July 2021; specification summary printed vi–vii and layout 1-2. PDF pages 2, 6, 7 and 12 visually inspected.

S491 · SM2NGFFMBU33 SATA M.2 enclosure datasheet

StarTech.com · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: SATA B/B+M M.2 support and explicit NVMe/AHCI PCIe exclusion. Conflicting module-length lists are not normalized into a claim.

Not established / limitations: Named example only. No universal compatibility or publication approval. Raw-byte acquisition status is recorded separately.

Locator: PDF pages 2–3: Features, Compatible Drive Types and General Specifications. Visually inspected.

S594 · TE C-2199230 M.2 socket customer drawing, revision B4

TE Connectivity · Manufacturer / product-owner domain · inspected 2026-10-13 · due 2027-01-11

Within inspection window

Scoped support: M.2 socket family; source-observed M-key representative and key/part variants.

Not established / limitations: PDF metadata says B3, but inspected drawing title blocks say B4; drawing content governs this observation. No claim this is the latest released revision.

Locator: Sheets 1–3 of 4 visually inspected. Sheet 1 revision B4 dated 05 NOV 2024; sheet 2 shows 1-2199230-5 and the key/part table; sheet 3 is a PCB footprint, not a mating view.

Trace 14 claims to their source records

C030A · P030

M.2 physical fit and keying do not establish whether a host supports a particular SATA, PCIe or NVMe device.

Claim scope: Consumer identification / documented standard or product class only

Source links: S033 · Evidence trail → (private workspace)

C030B · P030

Dell’s version-12 article illustrates 2242 as a nominal 22 × 42 mm module and 2280 as a nominal 22 × 80 mm module. These are module-format examples, not socket mating dimensions.

Claim scope: Article 000144170 version 12, Figure 1 examples (b)–(d); no tolerance, connector geometry or clearance inferred.

Source links: S426 · Evidence trail → (private workspace)

C030C · P030

ATP distinguishes M.2 keying from the interface actually wired to a socket: a mechanically matching key alone does not establish SATA or PCIe support.

Claim scope: Manufacturer compatibility checklist; no universal B, M or B+M key-to-protocol mapping or numeric contact positions.

Source links: S427 · Evidence trail → (private workspace)

C030D · P030

ATP calls for checking module length, mounting position and vertical/component clearance, including single- versus double-sided construction, separately from keying.

Claim scope: Physical fit checklist only; no invented height, tolerance, heat-spreader or fabrication dimensions.

Source links: S427 · Evidence trail → (private workspace)

C030E · P030

ATP separates firmware support for NVMe boot from mechanical fit and advises against treating ordinary M.2 installation as hot-plugging. Follow the exact equipment’s power-off and service instructions.

Claim scope: No claim that every NVMe-capable host can boot every drive; external USB removal is a different operation.

Source links: S427 · Evidence trail → (private workspace)

C030F · P030

The ASUS PRIME B550-PLUS AC-HES manual lists M.2_1 with SATA and PCIe x4 modes: PCIe 4.0 for the named Ryzen 5000/3000 desktop families, and PCIe 3.0 for the named 5000 G-Series/4000 G-Series families.

Claim scope: E18712 First Edition, printed vii. Only the manual’s named processor families and M.2_1 slot; actual CPU and firmware still require verification.

Source links: S429 · Evidence trail → (private workspace)

C030G · P030

On the same AC-HES board, the chipset-connected M.2_2 is specified for PCIe 3.0 x4 and SATA; both M.2 slot entries list 2242, 2260, 2280 and 22110 modules.

Claim scope: E18712 printed vii, exact board and slot labels; supported nominal lengths do not establish component clearance or boot qualification.

Source links: S429 · Evidence trail → (private workspace)

C030H · P030

StarTech SM2NGFFMBU33 explicitly excludes M.2 NVMe and AHCI PCI-Express SSDs.

Claim scope: Named SATA-only USB enclosure; the M.2 label or an apparently matching key cannot override this exclusion.

Source links: S491 · Evidence trail → (private workspace)

C030I · P030

The SM2NGFFMBU33 sheet lists SATA B-key and SATA B+M-key M.2 drive types.

Claim scope: Named enclosure drive-type list only. Its inconsistent module-length lists are held open, not treated as confirmed 2230 support.

Source links: S491 · Evidence trail → (private workspace)

C030J · P030

In TE drawing C-2199230 revision B4, the representative shown as 1-2199230-5 is an M-key board socket; the card edge is its counterpart, not the illustrated component.

Claim scope: V143: the named drawing/revision or exact product page only. Recognition and document-role evidence; not a pinout, adapter verdict, dimensioned mating gauge, electrical approval or current installed-device claim.

Source links: S594 · Evidence trail → (private workspace)

C030K · P030

The C-2199230 part table separates A, B, E and M key variants, and the M-key block includes several part suffixes rather than one universal socket.

Source links: S594 · Evidence trail → (private workspace)

C030L · P030

The C-2199230 drawing specifies 67 contact positions with a key interruption; its two solder-tail rows have different counts, so a single visible row is not the total contact inventory.

Source links: S594 · Evidence trail → (private workspace)

C030M · P030

Kingston states that a PCIe M.2 SSD in a SATA-only host socket—or a SATA M.2 SSD in a PCIe-only socket—does not gain the missing protocol merely from physical fit. Consult the system manual for the exact slot interface and any shared-lane restrictions.

Claim scope: Storage SSD interface only; not a claim about every M.2 socket or PCIe adapter

Source links: S033 · Evidence trail → (private workspace)

C296A · P296

Amphenol identifies the standard PCI Express x4 card-edge connector form with 64 positions/contacts in its PCIe connector range.

Claim scope: V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred.

Source links: S337 · Evidence trail → (private workspace)

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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.