Side by side

OSFP versus QSFP-DD host forms

Which pluggable-I/O host form does the equipment documentation identify?

Computer-generated illustration, not a photograph. — P221 · ConnectorOSFP host connector form

QSFP-DD host connector / cage form: original recognition drawing, not to scale — P202 · ConnectorQSFP-DD host connector / cage form

How they differ

OSFP host connector form Use cage width, module labeling and host documentation to distinguish OSFP from QSFP-family cages.
QSFP-DD host connector / cage form Confirm the exact host cage, module standard, firmware/vendor support and media before treating a module as compatible.

Then askWhich pluggable-I/O host form does the equipment documentation identify?

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	OSFP host connector form	QSFP-DD host connector / cage form
Type	Connector	Connector
Family	Pluggable I/O	Pluggable I/O
Shape	rectangular	card edge
Nominal contacts	60S226Source-backed nominal position count: 60.	76S205 · S219QSFP-DD host receptacle; nominal engineering count, not automatically positions, population or a device wiring map. QSFP-DD host receptacle
Positions / cavity span	60 (Claim C221A); 60 (Claim C221B)S226 · S246Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	1 (Molex2139120022)S992Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2139120022 OSFP female right-angle SMT connector; not a cage port matrix, genericOSFP assignment or reconstructed face. Quantity context: Manufacturer Number Of Rows property.	1 (Molex2027180103)S219Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2027180103 QSFP-DD host connector; manufacturer row metadata only, not the2x1 Amphenol cage/port matrix or a reconstructed face layout. Quantity context: Manufacturer Number Of Rows property.
Connector role	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	socket; socket (2027180103)S205 · S219 · S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. QSFP-DD host receptacle 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.
Key distinction	OSFP is a host/module form factor; the installed module and system documentation determine the actual network technology and rate.	A QSFP-DD cage outline is not a guarantee that any given module, link rate or breakout mode is supported.

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: Pluggable I/O

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	P221 / ConnectorOSFP host connector form Identification schematic · not to scale · drawing review pending	P202 / ConnectorQSFP-DD host connector / cage form Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	OSFP is a host/module form factor; the installed module and system documentation determine the actual network technology and rate.	A QSFP-DD cage outline is not a guarantee that any given module, link rate or breakout mode is supported.
Nominal contacts	60S226Source-backed nominal position count: 60.	76S205 · S219QSFP-DD host receptacle; nominal engineering count, not automatically positions, population or a device wiring map. QSFP-DD host receptacle
Positions / cavity span	60 (Claim C221A); 60 (Claim C221B)S226 · S246Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility.	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	1 (Molex2139120022)S992Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2139120022 OSFP female right-angle SMT connector; not a cage port matrix, genericOSFP assignment or reconstructed face. Quantity context: Manufacturer Number Of Rows property.	1 (Molex2027180103)S219Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2027180103 QSFP-DD host connector; manufacturer row metadata only, not the2x1 Amphenol cage/port matrix or a reconstructed face layout. Quantity context: Manufacturer Number Of Rows property.
Contact pitch	0.6 mm Example connector centerline / pitch (Recorded example component); 0.6 mm Source-described pitch / centerline (Claim C221B); 0.6 mm centerline (2324869-1)S246 · S246Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; OSFP host connector example V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility. 2324869-1. Documented role: socket. Page establishes SMT host connector and60positions; no new row count, face dimension or keying shape inferred. Existing profile is retained.	0.8 mm Example mating-interface pitch (Recorded example component); 0.8 mm mating interface (2027180103)S219 · S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; QSFP-DD host receptacle 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.
Dimensions / axis	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.
Connector role	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	socket; socket (2027180103)S205 · S219 · S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. QSFP-DD host receptacle 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.
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.	Polarized to mating part and PCB; keying and mating lock:no per catalog (2027180103)S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.
Documented identification	OSFP 60-position host interconnect form.C221A	QSFP-DD form-factor identification only; no performance claim.C202A
Evidence	C221A,C221W → Independent review pending	C202A,C202C,C202W → 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

OSFP host connector formP221 / Connector: Connector
QSFP-DD host connector / cage formP202 / Connector: Connector

Key distinction

OSFP host connector formP221 / Connector: OSFP is a host/module form factor; the installed module and system documentation determine the actual network technology and rate.
QSFP-DD host connector / cage formP202 / Connector: A QSFP-DD cage outline is not a guarantee that any given module, link rate or breakout mode is supported.

Nominal contacts

OSFP host connector formP221 / Connector: 60S226Source-backed nominal position count: 60.
QSFP-DD host connector / cage formP202 / Connector: 76S205 · S219QSFP-DD host receptacle; nominal engineering count, not automatically positions, population or a device wiring map. QSFP-DD host receptacle

Positions / cavity span

OSFP host connector formP221 / Connector: 60 (Claim C221A); 60 (Claim C221B)S226 · S246Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility.
QSFP-DD host connector / cage formP202 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

OSFP host connector formP221 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
QSFP-DD host connector / cage formP202 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

OSFP host connector formP221 / Connector: 1 (Molex2139120022)S992Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2139120022 OSFP female right-angle SMT connector; not a cage port matrix, genericOSFP assignment or reconstructed face. Quantity context: Manufacturer Number Of Rows property.
QSFP-DD host connector / cage formP202 / Connector: 1 (Molex2027180103)S219Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2027180103 QSFP-DD host connector; manufacturer row metadata only, not the2x1 Amphenol cage/port matrix or a reconstructed face layout. Quantity context: Manufacturer Number Of Rows property.

Contact pitch

OSFP host connector formP221 / Connector: 0.6 mm Example connector centerline / pitch (Recorded example component); 0.6 mm Source-described pitch / centerline (Claim C221B); 0.6 mm centerline (2324869-1)S246 · S246Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; OSFP host connector example V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility. 2324869-1. Documented role: socket. Page establishes SMT host connector and60positions; no new row count, face dimension or keying shape inferred. Existing profile is retained.
QSFP-DD host connector / cage formP202 / Connector: 0.8 mm Example mating-interface pitch (Recorded example component); 0.8 mm mating interface (2027180103)S219 · S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; QSFP-DD host receptacle 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.

Dimensions / axis

OSFP host connector formP221 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
QSFP-DD host connector / cage formP202 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

OSFP host connector formP221 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
QSFP-DD host connector / cage formP202 / Connector: socket; socket (2027180103)S205 · S219 · S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. QSFP-DD host receptacle 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.

Coupling / latch

OSFP host connector formP221 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
QSFP-DD host connector / cage formP202 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

OSFP host connector formP221 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
QSFP-DD host connector / cage formP202 / Connector: Polarized to mating part and PCB; keying and mating lock:no per catalog (2027180103)S219Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 2027180103. Documented role: socket. Manufacturer page lists1row for exact part, while existing form representation uses2rows. Do not overwrite row semantics without drawing comparison.; 76loaded circuits; right-angle SMT.

Documented identification

OSFP host connector formP221 / Connector: OSFP 60-position host interconnect form.C221A
QSFP-DD host connector / cage formP202 / Connector: QSFP-DD form-factor identification only; no performance claim.C202A

Evidence

OSFP host connector formP221 / Connector: C221A,C221W →
Independent review pending
QSFP-DD host connector / cage formP202 / Connector: C202A,C202C,C202W →
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 →

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Adjust this comparison

Add a field note

Evidence behind this page

Scope first. Source second. Approval separate.

5 linked sources · 5 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 2027-01-03. 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

S205 · ExtremePort QSFP-DD 112G product

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies a QSFP-DD host connector/cage product family; V36 uses the page only to establish the form-factor family, not channel performance.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: QSFP-DD product identification

S219 · 2027180103 QSFP-DD 76-circuit host connector

Molex · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Example-component engineering source documenting a QSFP-DD host receptacle with 76 circuits and 0.80 mm mating-interface pitch.

Not established / limitations: Example-component geometry only. V37 does not infer the full QSFP-DD pad assignment, lane map or fabrication tolerances from this product page.

Locator: Product description and physical fields

S226 · High Speed I/O connector selector — OSFP

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies the OSFP host interconnect as a 60-position, 0.6 mm-pitch form with eight high-speed channels; V39 uses only form-factor identity and position count.

Not established / limitations: Identification/reference scope only. V39 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Locator: OSFP sections

S509 · Amphenol V36-BAZ17-205E11A — specific QSFP-DD cage assembly

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Exact cage assembly description, not a complete optical transceiver or supported host/module list. Page image may not depict exact part; no physical study is derived from it.

Not established / limitations: Exact cage assembly description, not a complete optical transceiver or supported host/module list. Page image may not depict exact part; no physical study is derived from it. No raw HTML or manufacturer image archive is represented as retained.

Locator: Part title and product description: 2x1 long cage for anchor-pin SMT connector, light pipes and heatsink

S992 · 2139120022 OSFP connector full physical specifications and213912 series chart

Molex · Manufacturer / product-owner domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Exact2139120022 female right-angle SMT OSFP host connector only. NumberOfRows is manufacturer metadata, not a reconstructed numbered mating-face map.

Not established / limitations: Exact-part page warns limited information/not formally published to online part catalog. No exact drawing pixels, dimensions, pin assignments or universal OSFP performance established.

Locator: Full ExportSpreadsheet, exact2139120022 row; official exactpart page https://www.molex.com/en-us/products/part-detail/2139120022 PhysicalSpecifications.

Trace 5 claims to their source records

C202A · P202

Amphenol identifies the cited ExtremePort product as a QSFP-DD host connector/cage form.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S205 · Evidence trail → (private workspace)

C202C · P202

Amphenol identifies V36-BAZ17-205E11A as a QSFP-DD 2x1 long cage assembly for an anchor-pin SMT connector, with light pipes and a heatsink. The cited part is not a complete optical transceiver or proof of host support.

Claim scope: V121 named-product or explicitly scoped manufacturer distinction only; no wiring instruction, independent engineering approval or end-to-end compatibility guarantee.

Source links: S509 · Evidence trail → (private workspace)

C202W · P202

Molex2027180103 lists76loadedcircuits, manufacturer NumberOfRows1,0.80mm mating pitch, right-angle surface mounting, copper-alloy contacts and high-temperature thermoplastic housing. The one-row property belongs to this connector, separate from cage port counts.

Claim scope: Exact named manufacturer QSFP-DD connector only; limited-information notice retained. No face layout, signal map, installed-system capability or universal row convention inferred.

Source links: S219 · Evidence trail → (private workspace)

C221A · P221

Amphenol identifies OSFP as a 60-position host interconnect form in its high-speed I/O portfolio.

Claim scope: V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S226 · Evidence trail → (private workspace)

C221W · P221

Molex2139120022 is an OSFP female right-angle surface-mount connector with60loadedcircuits, manufacturer NumberOfRows1,0.60mm mating pitch, copper-alloy contacts with gold mating plating and a high-temperature thermoplastic housing.

Claim scope: Exact named manufacturer component; property metadata does not establish numbered face layout, device support or a universal OSFP specification.

Source links: S992 · 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.