Side by side

SFF-TA-1002 4C versus 4C+ connectors

Is the documented variation 4C/140-contact or 4C+/168-contact? The family label alone is not enough to establish the exact connector or implementation.

Computer-generated illustration, not a photograph. — P293 · ConnectorSFF-TA-1002 4C 140-contact connector

How they differ

SFF-TA-1002 4C 140-contact connector Confirm the 4C variant and 140-contact identity; do not confuse it with the longer 4C+ contact set or infer host support from contact count alone.
SFF-TA-1002 4C+ 168-contact connector Confirm the 4C+ designation and 168-contact identity from the exact platform documentation; a 4C-family label alone is not enough.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	SFF-TA-1002 4C 140-contact connector	SFF-TA-1002 4C+ 168-contact connector
Type	Connector	Connector
Family	Storage	Storage
Shape	card edge	card edge
Nominal contacts	140S334Source-backed nominal position/contact count for identification: 140. Not a pinout or manufacturing drawing.	168S335Source-backed nominal position/contact count for identification: 168. Not a pinout or manufacturing drawing.
Positions / cavity span	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	2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Connector role	card-edge; socketS334 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	card-edge; socketS335 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Key distinction	The 4C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.	The 4C+ mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.

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

The reference ledger

Read the same question across.

2 selected records · 13 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	P293 / ConnectorSFF-TA-1002 4C 140-contact connector Identification schematic · not to scale · drawing review pending	P294 / ConnectorSFF-TA-1002 4C+ 168-contact connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	The 4C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.	The 4C+ mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.
Nominal contacts	140S334Source-backed nominal position/contact count for identification: 140. Not a pinout or manufacturing drawing.	168S335Source-backed nominal position/contact count for identification: 168. Not a pinout or manufacturing drawing.
Positions / cavity span	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.
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	2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Contact pitch	0.6 mm longitudinal adjacent mating contact/pad centersS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	0.6 mm longitudinal adjacent mating contact/pad centersS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Dimensions / axis	57.17 mm maximum overall longitudinal span; 6.15 mm maximum transverse body depth; 9.25 mm maximum height from SMT lead plane to housing topS912 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	69.32 mm maximum overall longitudinal span; 6.15 mm maximum transverse body depth; 9.25 mm maximum height from SMT lead plane to housing topS912 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Connector role	card-edge; socketS334 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	card-edge; socketS335 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
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	Unequal divider keys prevent reversed mating; p.74FigB-3S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.	Three segmented slots with unequal divider spacingS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
Documented identification	SNIA REF-TA-1012 identifies the SFF-TA-1002 4C connector variation as a 140-contact connector with up to 44 differential pairs of data signals.C293A	SNIA REF-TA-1012 identifies the SFF-TA-1002 4C+ connector variation as a 168-contact connector with up to 52 differential pairs of data signals.C294A
Evidence	C293A → Independent review pending	C294A → 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

SFF-TA-1002 4C 140-contact connectorP293 / Connector: Connector
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: Connector

Key distinction

SFF-TA-1002 4C 140-contact connectorP293 / Connector: The 4C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: The 4C+ mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.

Nominal contacts

SFF-TA-1002 4C 140-contact connectorP293 / Connector: 140S334Source-backed nominal position/contact count for identification: 140. Not a pinout or manufacturing drawing.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: 168S335Source-backed nominal position/contact count for identification: 168. Not a pinout or manufacturing drawing.

Positions / cavity span

SFF-TA-1002 4C 140-contact connectorP293 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

SFF-TA-1002 4C 140-contact connectorP293 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

SFF-TA-1002 4C 140-contact connectorP293 / Connector: 2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: 2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.

Contact pitch

SFF-TA-1002 4C 140-contact connectorP293 / Connector: 0.6 mm longitudinal adjacent mating contact/pad centersS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: 0.6 mm longitudinal adjacent mating contact/pad centersS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.

Dimensions / axis

SFF-TA-1002 4C 140-contact connectorP293 / Connector: 57.17 mm maximum overall longitudinal span; 6.15 mm maximum transverse body depth; 9.25 mm maximum height from SMT lead plane to housing topS912 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: 69.32 mm maximum overall longitudinal span; 6.15 mm maximum transverse body depth; 9.25 mm maximum height from SMT lead plane to housing topS912 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.

Connector role

SFF-TA-1002 4C 140-contact connectorP293 / Connector: card-edge; socketS334 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: card-edge; socketS335 · S356 · S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. SFF-TA-1002 card-edge connector variation Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.

Coupling / latch

SFF-TA-1002 4C 140-contact connectorP293 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

SFF-TA-1002 4C 140-contact connectorP293 / Connector: Unequal divider keys prevent reversed mating; p.74FigB-3S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: Three segmented slots with unequal divider spacingS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 4C+ straight fixed receptacle; not right-angle/straddle variants. Documented role: socket. Standard drawing limits, not a measured specimen or exact manufacturer part.; A1 indicator shape is not transcribed as literal lettering. Manufacturer logo/series/part markings remain unknown.; Preserve existing application pinout records; mechanical drawing does not establish electrical usage.

Documented identification

SFF-TA-1002 4C 140-contact connectorP293 / Connector: SNIA REF-TA-1012 identifies the SFF-TA-1002 4C connector variation as a 140-contact connector with up to 44 differential pairs of data signals.C293A
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: SNIA REF-TA-1012 identifies the SFF-TA-1002 4C+ connector variation as a 168-contact connector with up to 52 differential pairs of data signals.C294A

Evidence

SFF-TA-1002 4C 140-contact connectorP293 / Connector: C293A →
Independent review pending
SFF-TA-1002 4C+ 168-contact connectorP294 / Connector: C294A →
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.

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Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 2 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 2027-01-04. 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

S334 · SNIA REF-TA-1012 SFF-TA-1002 connector variations — 4C

SNIA · Standards-organization domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Draft REF-TA-1012 Rev 0.0.2 identification reference for the SFF-TA-1002 4C connector variation; used only for the stated contact-count/form fact.

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

Locator: Section 3.1 overview, 4C connector variation

S335 · SNIA REF-TA-1012 SFF-TA-1002 connector variations — 4C+

SNIA · Standards-organization domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Draft REF-TA-1012 Rev 0.0.2 identification reference for the SFF-TA-1002 4C+ connector variation; used only for the stated contact-count/form fact.

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

Locator: Section 3.1 overview, 4C+ connector variation

Trace 2 claims to their source records

C293A · P293

SNIA REF-TA-1012 identifies the SFF-TA-1002 4C connector variation as a 140-contact connector with up to 44 differential pairs of data signals.

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

Source links: S334 · Evidence trail → (private workspace)

C294A · P294

SNIA REF-TA-1012 identifies the SFF-TA-1002 4C+ connector variation as a 168-contact connector with up to 52 differential pairs of data signals.

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

Source links: S335 · 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.