Cisco OSFP-2X400G-FR4 Compatible 800G Twin-port OSFP IHS/Closed Finned Top Transceiver Module

Cisco OSFP-2X400G-FR4 Compatible 800G Twin-port OSFP IHS/Closed Finned Top Transceiver Module

Built for hosts recognizing OSFP-2X400G-FR4, this HT-manufactured Twin-port OSFP IHS/Closed Finned Top module delivers 800G transmission at 1271nm, 1291nm, 1311nm and 1331nm. Its rated reach is 2km, with Dual Duplex LC/UPC as the physical interface. The specifications and engineering guidance below support data-center designers evaluate optical reach, rack integration and host compatibility together, while keeping HT manufacture separate from the OEM cross-reference.

OEM Part Number: OSFP-2X400G-FR4HT Part Number: OSFP-2FR4-800G

Product Highlights

  • Compatible alternative to Cisco OSFP-2X400G-FR4
  • 800G connectivity at 850Gbps (8x 106.25Gbps)
  • Optical wavelength: 1271nm, 1291nm, 1311nm and 1331nm
  • Specified reach: 2km
  • Dual Duplex LC/UPC / SMF interface
  • Digital diagnostic monitoring: Supported
  • Operating temperature: 0 to 70°C (32 to 158°F)

Specifications

Cisco CompatibleOSFP-2X400G-FR4
ManufacturerHT
HT Part NumberOSFP-2FR4-800G
Form FactorTwin-port OSFP IHS/Closed Finned Top
Max. Data Rate850Gbps (8x 106.25Gbps)
Wavelength1271nm, 1291nm, 1311nm and 1331nm
Max. Cable Distance2km
ConnectorDual Duplex LC/UPC
MediaSMF
Transmitter TypeEML
Receiver TypePIN
TX Power-3.2~4.4dBm
Minimum Receiver Power-7.2dBm
Power Budget4dB
Receiver Overload4.4dBm
Max. Power Consumption16.5W
Extinction Ratio>3.5dB
DDM/DOMSupported
Commercial Temperature Range0 to 70°C (32 to 158°F)
Modulation (Electrical)8x 100G-PAM4
Modulation (Optical)Dual 4x 100G-PAM4
ProtocolsOSFP MSA HW Rev 4.1, CMIS Rev 5.0, IEEE 802.3cu-2021, IEEE P802.3ck D2.2

Applications and Optical Link Design

Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.

Before deployment, check the host port type, supported data rate and firmware requirements. The 800G interface configuration must match the remote equipment; sharing a Twin-port OSFP IHS/Closed Finned Top housing alone does not make two transceiver types interoperable.

The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 2km route. Keep the Dual Duplex LC/UPC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.

Quality Assurance and Packaging

Each OSFP-2X400G-FR4 compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.

Optical Acceptance, Diagnostics and Handling

For this model, the specified transmit-power range is -3.2~4.4dBm; the stated optical power budget is 4dB. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.

Data-Center Optical Design and Airflow

Select the module by optical standard, reach and rack layout. Check the complete fiber channel, including panels and connectors, and keep dense bundles from blocking front-panel airflow. Account for listed power consumption and preserve enough space to remove a module without disturbing adjacent links. For this model, the principal parameters are data rate 850Gbps (8x 106.25Gbps), wavelength 1271nm, 1291nm, 1311nm and 1331nm, rated reach 2km.

Ordering Information

Use OSFP-2X400G-FR4 as the compatibility cross-reference and OSFP-2FR4-800G as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.

Cisco Compatibility and Factory Testing

Compatibility testing for OSFP-2X400G-FR4 combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.

Frequently Asked Questions

Is this an original Cisco transceiver?

No. It is an HT-manufactured compatible alternative for equipment that specifies OSFP-2X400G-FR4, not an original Cisco-branded module.

Which fiber and connector are required?

Use Dual Duplex LC/UPC with SMF. The specified maximum reach is 2km, subject to fiber quality and total link loss.

Can it be mixed with another wavelength or reach version?

Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.

Shipping and Lead Time

Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.


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