Arista Networks OSFP-400G-4Q4xNAO Compatible 400G OSFP 8 x 50G PAM4 IHS/Finned Top to 4 x 100G QSFP28 4 x 25G NRZ Active Optical Breakout Cable
This Arista Networks OSFP-400G-4Q4xNAO compatible cable series provides 400G connectivity through a OSFP (IHS/Finned Top) to 4x QSFP28 configuration. It is a complete optical assembly with permanently attached ends and integrated fiber. The page brings together the series specifications, compatibility guidance and direct links to the individual length and OEM part-number pages used for ordering.
Series Part Number: OSFP-400G-4Q4xNAOHT Part Number: OSFP-400G-4Q4xNAO
Product Highlights
- HT-manufactured compatible alternative for Arista Networks OSFP-400G-4Q4xNAO
- 400G aggregate connectivity at 400Gbps
- Interface configuration: OSFP (IHS/Finned Top) to 4x QSFP28
- Breakout AOC
- Length configurations covered: 5m (16ft)
- Power consumption: 10W (OSFP End) 5.5W (QSFP28 Per End)
Available Lengths and Corresponding Part Numbers
The documented series configuration is 5m (16ft). 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-400G-4Q4xNAO05
Specifications
| HT Part Number | OSFP-400G-4Q4xNAO |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) to 4x QSFP28 |
| Max. Data Rate | 400Gbps |
| Cable Length Options Covered | 5m (16ft) |
| Cable Type | Breakout AOC |
| Wavelength | 850nm |
| Minimum Bend Radius | 30mm |
| Transmitter Type | VSCEL |
| Receiver Type | PIN |
| Max. Power Consumption | 10W (OSFP End) 5.5W (QSFP28 Per End) |
| Jacket Material | OFNP |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Modulation Format | 8x 50G-PAM4 to Quad 4x 25G-NRZ |
| DDM/DOM | Supported |
| Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | CMIS 4.0, SFF-8636，IEEE 802.3bs-400GAUI-8, IEEE802.3bm-CAUI-4, OSFP MSA, SFF-8661, SFF-8639 |
Project Documentation and Cable Identification
Large deployments are easier to audit when the order code, physical length and endpoint record agree. Keep the OEM reference in the compatibility document and use the HT part number on the packing list. Where several lengths arrive together, labels and carton groups can be arranged by rack or port plan so installers do not have to identify cables by appearance alone. For this series, keep the interface rate, AOC construction and length-specific OEM reference together throughout that review.
Arista Networks Compatibility and Factory Testing
Factory verification links the compatibility identity to the exact physical assembly described on this page. Identification, connector condition and live link behavior are checked before packing. Customers can submit equipment and firmware details with the project documentation for a more specific pre-order compatibility review. 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.
Applications and Deployment
Active optical cables integrate optical engines and fiber into a single factory-terminated link. They provide a lighter, longer-reach alternative to copper direct attach without requiring separate transceiver and patch-cord selection. The complete assembly should be routed with bend protection and connected only between compatible optical standards and port modes. For this series, the listed interface is OSFP (IHS/Finned Top) to 4x QSFP28 and the aggregate rate is 400G.
Cable Construction and Routing
For this assembly, the jacket material is OFNP; the minimum bend radius is 30mm; the power consumption is 10W (OSFP End) 5.5W (QSFP28 Per End). These parameters belong in the installation review rather than being treated as catalogue trivia. Route the cable through its intended managers without tension, avoid pressure close to the connector boots and leave enough space to operate the latches. Any service loop must respect the stated bend limit.
Ordering Information
Use the listed HT part number for ordering and retain the OEM reference as the host-compatibility cross-reference. Send quantities by length, along with any rack-based packing or label instructions. If the project has mixed equipment, include the host model for each group rather than relying only on the aggregate cable rate. 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-400G-4Q4xNAO identifies the product family; the linked page provides the final length-specific identity.
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.
Quality Assurance and Packaging
Inspection and link testing are completed before the cable enters its protective packaging. Project orders can be packed and labelled by length, rack or customer reference, with packing documentation that makes received quantities straightforward to reconcile against the installation schedule. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible cable for equipment that specifies OSFP-400G-4Q4xNAO, not an original Arista Networks-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 AOC 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.
