Side by side

SFF-TA-1002 1C versus 2C connectors

Is the documented SFF-TA-1002 variation 1C/56-contact or 2C/84-contact? Contact count distinguishes these forms but does not establish device protocol or host support.

Computer-generated illustration, not a photograph. — P291 · ConnectorSFF-TA-1002 1C 56-contact connector

How they differ

SFF-TA-1002 1C 56-contact connector Confirm the SFF-TA-1002 1C variant and 56-contact identity from the system or component documentation before inferring an EDSFF application.
SFF-TA-1002 2C 84-contact connector Confirm the SFF-TA-1002 2C variant and 84-contact identity from the system or component documentation before inferring an EDSFF application.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	SFF-TA-1002 1C 56-contact connector	SFF-TA-1002 2C 84-contact connector
Type	Connector	Connector
Family	Storage	Storage
Shape	card edge	card edge
Nominal contacts	56S332Source-backed nominal position/contact count for identification: 56. Not a pinout or manufacturing drawing.	84S333Source-backed nominal position/contact count for identification: 84. 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 1C 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 2C 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; socketS332 · 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 1C 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; socketS333 · 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 2C 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 1C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.	The 2C 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	P291 / ConnectorSFF-TA-1002 1C 56-contact connector Identification schematic · not to scale · drawing review pending	P292 / ConnectorSFF-TA-1002 2C 84-contact connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	The 1C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.	The 2C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.
Nominal contacts	56S332Source-backed nominal position/contact count for identification: 56. Not a pinout or manufacturing drawing.	84S333Source-backed nominal position/contact count for identification: 84. 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 1C 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 2C 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 1C 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 2C 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	24.03 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 1C 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.	35.75 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 2C 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; socketS332 · 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 1C 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; socketS333 · 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 2C 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	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	One off-center slot-divider keyS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 2C 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 1C connector variation as a 56-contact connector with up to 18 differential pairs of data signals.C291A	SNIA REF-TA-1012 identifies the SFF-TA-1002 2C connector variation as an 84-contact connector with up to 26 differential pairs of data signals.C292A
Evidence	C291A → Independent review pending	C292A → 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 1C 56-contact connectorP291 / Connector: Connector
SFF-TA-1002 2C 84-contact connectorP292 / Connector: Connector

Key distinction

SFF-TA-1002 1C 56-contact connectorP291 / Connector: The 1C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.
SFF-TA-1002 2C 84-contact connectorP292 / Connector: The 2C mechanical/contact form does not by itself establish an EDSFF device size, protocol generation, lane use or system compatibility.

Nominal contacts

SFF-TA-1002 1C 56-contact connectorP291 / Connector: 56S332Source-backed nominal position/contact count for identification: 56. Not a pinout or manufacturing drawing.
SFF-TA-1002 2C 84-contact connectorP292 / Connector: 84S333Source-backed nominal position/contact count for identification: 84. Not a pinout or manufacturing drawing.

Positions / cavity span

SFF-TA-1002 1C 56-contact connectorP291 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 2C 84-contact connectorP292 / 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 1C 56-contact connectorP291 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 2C 84-contact connectorP292 / 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 1C 56-contact connectorP291 / Connector: 2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 1C 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 2C 84-contact connectorP292 / Connector: 2S912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 2C 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 1C 56-contact connectorP291 / 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 1C 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 2C 84-contact connectorP292 / 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 2C 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 1C 56-contact connectorP291 / Connector: 24.03 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 1C 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 2C 84-contact connectorP292 / Connector: 35.75 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 2C 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 1C 56-contact connectorP291 / Connector: card-edge; socketS332 · 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 1C 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 2C 84-contact connectorP292 / Connector: card-edge; socketS333 · 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 2C 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 1C 56-contact connectorP291 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 2C 84-contact connectorP292 / 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 1C 56-contact connectorP291 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SFF-TA-1002 2C 84-contact connectorP292 / Connector: One off-center slot-divider keyS912Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Rev1.6a 2C 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 1C 56-contact connectorP291 / Connector: SNIA REF-TA-1012 identifies the SFF-TA-1002 1C connector variation as a 56-contact connector with up to 18 differential pairs of data signals.C291A
SFF-TA-1002 2C 84-contact connectorP292 / Connector: SNIA REF-TA-1012 identifies the SFF-TA-1002 2C connector variation as an 84-contact connector with up to 26 differential pairs of data signals.C292A

Evidence

SFF-TA-1002 1C 56-contact connectorP291 / Connector: C291A →
Independent review pending
SFF-TA-1002 2C 84-contact connectorP292 / Connector: C292A →
Independent review pending

Your next step

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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

S332 · SNIA REF-TA-1012 SFF-TA-1002 connector variations — 1C

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 1C 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, 1C connector variation

S333 · SNIA REF-TA-1012 SFF-TA-1002 connector variations — 2C

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 2C 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, 2C connector variation

Trace 2 claims to their source records

C291A · P291

SNIA REF-TA-1012 identifies the SFF-TA-1002 1C connector variation as a 56-contact connector with up to 18 differential pairs of data signals.

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

Source links: S332 · Evidence trail → (private workspace)

C292A · P292

SNIA REF-TA-1012 identifies the SFF-TA-1002 2C connector variation as an 84-contact connector with up to 26 differential pairs of data signals.

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

Source links: S333 · 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.