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Dell AOC-Q56DD-400G-70M Compatible 400G QSFP-DD 8 x 50G PAM4 Active Optical Cable, 70m (230ft)

Dell AOC-Q56DD-400G-70M Compatible 400G QSFP-DD 8 x 50G PAM4 Active Optical Cable, 70m (230ft)

Designed for hosts that recognize AOC-Q56DD-400G-70M, this QSFP-DD to QSFP-DD cable delivers 400G transmission over a fixed 70m (230ft) assembly. Its AOC construction provides a factory-terminated active optical link with the optical engines and fiber integrated into the assembly.

OEM Part Number: AOC-Q56DD-400G-70MHT Part Number: AOC-Q56DD-400G-70M

Product Highlights

  • Compatible alternative to Dell AOC-Q56DD-400G-70M
  • 400G connectivity at 400Gbps
  • Interface configuration: QSFP-DD to QSFP-DD
  • Fixed length and part number: 70m (230ft), AOC-Q56DD-400G-70M
  • Cable construction: OM4
  • Maximum power consumption: 8W Per End
  • Minimum bend radius: 30mm
  • Operating temperature: 0 to 70°C (32 to 158°F)

Specifications

HT Part NumberAOC-Q56DD-400G-70M
Dell CompatibleAOC-Q56DD-400G-70M
ManufacturerHT
Form FactorQSFP-DD to QSFP-DD
Max. Data Rate400Gbps
Cable Length70m (230ft)
Cable TypeOM4
Wavelength850nm
Minimum Bend Radius30mm
Transmitter TypeVSCEL
Receiver Type850nm PIN
Max. Power Consumption8W Per End
Jacket MaterialOFNP
CDR (Clock and Data Recovery)TX & RX Built-in CDR
Modulation FormatPAM4
DDM/DOMSupported
Commercial Temperature Range0 to 70°C (32 to 158°F)
ProtocolsIEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA,QSFP-DD-CMIS-rev4p0
Inbuilt FECNo
Application8x 50G-PAM4

Signal and Lane Configuration

The listed modulation format is PAM4. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.

Cable Construction and Routing

This assembly uses OFNP jacket, minimum bend radius 30mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.

Network and Protocol Considerations

The intended application is 8x 50G-PAM4. Listed interface and protocol references include IEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA,QSFP-DD-CMIS-rev4p0. Confirm that the host firmware and port configuration support the same operating mode.

Integrated Optical Assembly

The optical engines and fiber are permanently integrated into this AOC. There are no detachable optical modules to clean or exchange. Handle the complete assembly by its connector housings and cable, and keep both ends matched to the same interface specification.

Length Selection and Installation Planning

The extended 70m (230ft) reach supports connections across adjacent racks or between separated equipment rows. Secure the cable along its route, protect both ends from pull loads and preserve ventilation. The integrated AOC construction avoids a chain of separate modules and patch leads.

Position Within the Length Range

AOC-Q56DD-400G-70M occupies the middle of this family between AOC-Q56DD-400G-50M at 50m (164ft) and AOC-Q56DD-400G-100M at 100m (328ft). It adds 20m over the shorter option for extra routing clearance, while the next longer version adds another 30m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

Power and Thermal Planning

The rated power consumption is 8W Per End. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.

Dell Compatibility and Factory Testing

Our compatibility setup for Dell AOC-Q56DD-400G-70M is checked together with the physical 70m (230ft) assembly. Factory verification covers connector condition, host identification, error-free link establishment and optical link operation, receive activity and diagnostic readouts. Providing the exact host model and firmware release helps us identify platform-specific requirements before production.

Ordering Information

This product is ordered as AOC-Q56DD-400G-70M in 70m (230ft). Include the equipment model and software release if you would like a pre-order compatibility review. Other lengths use different part numbers and should not be substituted into the same order line.

Frequently Asked Questions

Is this an original Dell cable?

No. It is an HT-manufactured compatible alternative for equipment that specifies Dell AOC-Q56DD-400G-70M.

Can I use it between different speeds or interface types?

Only when both hosts explicitly support the same data rate, lane mapping and breakout configuration. Mechanical fit alone is not proof of interoperability.

What information should I provide for a compatibility check?

Provide the host manufacturer, equipment model, port type, hardware revision and software release, together with the OEM part number and required quantity.

Does this page include more than one cable length?

No. This page is dedicated to 70m (230ft) and part number AOC-Q56DD-400G-70M. Other lengths have their own part numbers and product pages.

Quality Assurance and Packaging

Every AOC-Q56DD-400G-70M compatible assembly undergoes link testing, compatibility verification and visual inspection. The 70m (230ft) cable is coiled without exceeding its minimum bend radius, fitted with connector protection and packed in an anti-static bag or protective tray before cartoning. Project labels and packing lists are available for volume orders.

Shipping and Lead Time

Stock items are generally dispatched within one to three working days after order confirmation. DHL, UPS, FedEx, TNT and EMS are available for international delivery; larger consolidated orders can move by air or sea freight. Customer courier accounts and nominated forwarders are accepted.

 

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