2 x 2 in one press-fit part
WH81161Y22121 stacks four ports in a 2 x 2 array with the connectors inside the cage: one press-fit part on the board instead of separate cages and connectors.
I/O Connector products
QSFP56 Connectors & Cage-and-Connector Assemblies
Compare the WH81161Y22121 2×2 cage-and-connector assembly and WHSFP75011F003 PCB connector listed for QSFP56 host designs. Confirm whether the project needs a complete assembly or the receptacle alone, then review the target module, PCB, panel and thermal requirements.
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Filter QSFP56 connectors and assemblies by type, ports, mounting, light pipe, heat sink and plating.
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WH81161Y22121 | SPEC | Cage+Connector | QSFP56 | 200G | Press-Fit | 2 x 2 | ○ ○ | Heat Sink | 30U | Ni 50U |
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WHSFP75011F003 | SPEC | Connector | QSFP56 | 200G | — | 1 x 1 | NONE | — | 30U | None |
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Series overview
QSFP56 connector or complete assembly
A QSFP56 connector is the board-side contact block of a 200G pluggable port, and its cage guides and shields the module. Other names include QSFP56 receptacle, 200G QSFP56 cage and QSFP56 cage assembly. Parts here list 30U gold contacts; the stacked assembly adds press-fit mounting, light pipes and a heat sink. For 100G ports, see QSFP28 connectors and cages; for 400G, see QSFP-DD connectors and cages.
Heat sink and light pipes
The assembly is listed with a heat sink and light pipes. Plan airflow across all four ports and match board LED positions to the light pipe layout in the drawing.
30U gold contacts
WH81161Y22121 and WHSFP75011F003 list 30U connector gold; the assembly adds a Ni 50U shell. Thicker gold helps where modules are swapped often; check the plating spec in each datasheet.
Connector-only option
WHSFP75011F003 is a 1 x 1 QSFP56 PCB connector for designs that choose the cage separately. Its datasheet gives the mounting method and land pattern; align the cage drawing to it.
Applications
Where a QSFP56 connector is used
QSFP56 ports carry 200G links in switching, compute and storage hardware.
200G switch line cards
Switches with 200G ports can use the 2 x 2 assembly WH81161Y22121 for four ports in one block, with a heat sink and light pipes built in.
Cluster network adapters
HPC and AI clusters run 200G links between servers and fabric switches. On adapter cards, WHSFP75011F003 sits under a cage chosen to fit the bracket.
Storage and test systems
Storage controllers and 200G test gear need few ports but a tight fit. The 3D model of WH81161Y22121 helps check panel cutout and heat sink height early.
Downloads & technical resources
QSFP56 connector datasheets and drawings
Search either part number for its datasheet, plus the 3D model of the assembly, and check footprint and faceplate cutout before layout.
Showing representative available file sets. Search to find a specific SKU.
WH81161Y22121Cage+Connector
WHSFP75011F003Connector
- 2
- PDF datasheets listed
- 1
- 3D file sets listed
- 0
- PCB footprints listed
VOOHU’s published product content is reviewed by its engineering team. Specifications, downloads and technical support information are tied to specific part numbers, so you can verify them before requesting samples or a quotation.
Sourcing
Getting QSFP56 connectors from VOOHU
VOOHU manufactures QSFP56 connectors and cage assemblies in its own connector factory in Dongguan. WH81161Y22121 has a datasheet and a 3D model, and WHSFP75011F003 a datasheet, enough to start PCB and enclosure checks.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
Samples and quotations
Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project. For a quote, tell us the part number, quantity and required date; typical lead time is 7–10 days.
Replacing a QSFP56 assembly
Send the part number and datasheet of your current QSFP56 assembly or connector. Our FAE team compares port array, heat sink, light pipes, plating and footprint, then suggests VOOHU candidates to validate with samples before production.
Quality and company
VOOHU is ISO 9001 and ISO 14001 certified. Since 2018 VOOHU has supplied more than 1,500 customers, including 150+ listed companies.
FAQ & related guides
QSFP56 connector questions
Answers on manufacturing, placement and the step to QSFP-DD.
Which QSFP56 parts are listed for evaluation?
The English catalog lists WH81161Y22121 as a cage-and-connector assembly and WHSFP75011F003 as a connector. Choose the required component type and verify the part-specific documents.
What does 2×2 describe?
It describes an array of two rows with two ports per row. Use the drawing for actual spacing, height and mounting dimensions.
Can a QSFP56 assembly directly replace a QSFP28 design?
Assess the existing part, module and host conditions. Membership of the QSFP family does not establish direct replacement.
Are light pipes and a heat sink included?
The catalog shows these features; confirm the ordered configuration, assembly details and revision against the part BOM.
Can I request a quote directly for WH81161Y22121?
Yes. Send quantity, project stage, destination and required timing, along with any documentation or replacement requirements.
Is VOOHU the manufacturer of these QSFP56 connectors?
Yes. VOOHU manufactures the connector WHSFP75011F003 and the cage assembly WH81161Y22121 in its own connector factory in Dongguan, China. The same factory builds our QSFP28 and QSFP-DD ranges, which helps when one platform mixes port speeds.
What should I check before placing the 2 x 2 assembly?
Check the press-fit hole pattern and board thickness, the faceplate cutout, heat sink clearance under the lid and the light pipe exits. The datasheet and 3D model of WH81161Y22121 cover these points for layout review.
Should I move from QSFP56 to QSFP-DD?
Parts here are listed for 200G, and those on our QSFP-DD connector and cage page for 400G. A move changes connector, cage and board layout, so treat it as a new design and validate with samples.
Engineer support
QSFP56 connector samples and engineering help
Send the candidate part number and the condition you need reviewed. Sample support can be added after the selection is clear; commercial questions may be discussed in the same engineering conversation.
- 1Selected part numbers
- 2Engineering review
- 3Sample request
- 4Commercial discussion
For a replacement review
- Original part and datasheet
Include the document revision
- Operating conditions
Temperature, isolation voltage and PoE current basis
- Package constraints
Pin count, pitch and spacing between pin rows
- Project stage and annual volume
To help prioritize samples and evaluation
- Target review date
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
For samples and a quotation
- Candidate part numbers
From the selector or engineering review
- Quantity and project stage
Prototyping / pilot build / production
- Required delivery date
Specify sample and production timing separately
- Required documentation
Compliance documents, material declarations or third-party reports
Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project. Sales will respond on business days.
Related guides and reviews
QSFP28, QSFP-DD, QSFP112 and OSFP host cages explained
SFP to QSFP connector selection guide
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