NVIDIA/Mellanox OSFP-800G-4OPC Compatible 800G OSFP 8 x 100G PAM4 IHS/Finned Top to 4 x 200G OSFP 2 x 100G PAM4 IHS/Finned Top Ethernet Passive Copper Breakout Cable

NVIDIA/Mellanox OSFP-800G-4OPC Compatible 800G OSFP 8 x 100G PAM4 IHS/Finned Top to 4 x 200G OSFP 2 x 100G PAM4 IHS/Finned Top Ethernet Passive Copper Breakout Cable

A 800G direct-attached link depends on the correct host identity, interface mode and physical length. This page covers the NVIDIA/Mellanox OSFP-800G-4OPC compatible DAC series in OSFP (IHS/Finned Top) to 4x OSFP (IHS/Finned Top), including 1m (3ft). Each documented length-specific OEM reference is linked separately where an individual product page is available.

Series Part Number: OSFP-800G-4OPCHT Part Number: OSFP-800G-4OPC

Product Highlights

  • HT-manufactured compatible alternative for NVIDIA/Mellanox OSFP-800G-4OPC
  • 800G aggregate connectivity at 800Gbps
  • Interface configuration: OSFP (IHS/Finned Top) to 4x OSFP (IHS/Finned Top)
  • Passive Breakout DAC / Copper
  • Length configurations covered: 1m (3ft)
  • Conductor specification: 28AWG
  • Power consumption: 0.1W (800G End), 0.1W (200G Per End)
  • Operating temperature: 0 to 70°C (32 to 158°F)

Available Lengths and Corresponding Part Numbers

The documented series configuration is 1m (3ft). Use the relevant OEM reference below together with the HT identity and required length when requesting a quotation. If another length carries a different OEM part number, it must be reviewed and ordered as that distinct configuration.

Compatible OEM Part Numbers

  • OSFP-800G-4OPC01

Specifications

HT Part NumberOSFP-800G-4OPC
ManufacturerHT
Form FactorOSFP (IHS/Finned Top) to 4x OSFP (IHS/Finned Top)
Max. Data Rate800Gbps
MediaCopper
Cable TypePassive Breakout DAC
Cable Length Options Covered1m (3ft)
Wire AWG28AWG
Minimum Bend Radius31mm
Max. Power Consumption0.1W (800G End), 0.1W (200G Per End)
Jacket MaterialPVC (OFNR)
Commercial Temperature Range0 to 70°C (32 to 158°F)
Modulation Format8x100G-PAM4 to Quad 2x100G-PAM4
Application800G/200G Ethernet
ProtocolsOSFP MSA, CMIS Rev4.0, IEEE 802.3ck

Applications and Deployment

Passive twinax cables are commonly selected for short switch-to-switch, switch-to-server and accelerator connections within or between nearby racks. With no separate optical conversion stage, they offer a simple low-power physical link. The assembly must nevertheless remain within the length, signaling rate and qualification limits accepted by both hosts. For this series, the listed interface is OSFP (IHS/Finned Top) to 4x OSFP (IHS/Finned Top) and the aggregate rate is 800G. The stated application is 800G/200G Ethernet.

Cable Construction and Routing

The specification table records the conductor specification is 28AWG; the jacket material is PVC (OFNR); the minimum bend radius is 31mm; the operating temperature is 0 to 70°C (32 to 158°F); the power consumption is 0.1W (800G End), 0.1W (200G Per End). Use those values when preparing the rack pathway and receiving checklist. Do not pull a connector by its cable, compress the run under tight ties or force excess length into a sharp coil. Connector protection should remain in place until the assembly is ready for insertion.

Mixed-Vendor Network Operation

A mixed-vendor link should be documented at both ends, not treated as one generic connection. Confirm which OEM identity each host expects and whether the two ends use the same compatibility requirement. The related brand links below help locate equivalent-length assemblies, while the physical form factor and lane arrangement must still agree across the complete path. For this series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.

NVIDIA/Mellanox Compatibility and Factory Testing

Testing addresses the brand-specific identification as well as the operating link and available diagnostics. The same physical cable family can require a different host identity for another equipment vendor, so the intended platform should be supplied when a deployment combines multiple brands or unusual hardware revisions. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.

Ordering Information

For mixed-vendor projects, identify the equipment at both ends along with the OEM reference, length and quantity. Order each compatibility version under its own part number. If spare assemblies are required, list them separately so labels and test records remain unambiguous. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number OSFP-800G-4OPC identifies the product family; the linked page provides the final length-specific identity.

Quality Assurance and Packaging

Both ends are inspected and the complete assembly is powered up for a functional check before packing. Connectors are protected individually and the cable is secured without tight bends. Optional labels can distinguish host brand, OEM reference and length for easier spares management. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.

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.

Frequently Asked Questions

Is this an original NVIDIA/Mellanox cable?

No. It is an HT-manufactured compatible cable for equipment that specifies OSFP-800G-4OPC, not an original NVIDIA/Mellanox-branded product.

Are different lengths and OEM part numbers separate products?

Yes. Where a length has its own OEM reference, follow the corresponding link above and order that exact part number on its own line. Do not substitute another length only because the connector arrangement is the same.

Does this DAC cable require separate modules at each end?

No. The connector ends and cable form one complete direct-attach assembly. The ends are not detachable standalone transceivers, and the complete product is tested together.

What information helps confirm compatibility?

Provide the equipment manufacturer and model, port type, hardware revision and software release, together with the required OEM reference, length and quantity. Breakout projects should also identify the intended lane configuration.


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