
The 400G OSFP IHS/Finned Top to 4 x 100G QSFP28 Active Optical Breakout AOC is an active optical cable assembly with OSFP (IHS/Finned Top) to 4x QSFP28, carrying 400Gbps over Breakout AOC at 850nm. Factory terminated and tested as a complete link, it offers a lighter and more flexible alternative to discrete transceivers with patch cords for 400G Ethernet data center and cloud network environments. Cable length: 1m (3ft)~30m (98ft).
Product Highlights
- OSFP (IHS/Finned Top) to 4x QSFP28
- Data rate: 400Gbps
- Cable type: Breakout AOC
- Length: 1m (3ft)~30m (98ft)
- Wavelength: 850nm
- DDM/DOM: Supported
Specifications
| Part Number | OSFP-400G-4Q4xNAOxxx |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) to 4x QSFP28 |
| Max. Data Rate | 400Gbps |
| Cable Length | 1m (3ft)~30m (98ft) |
| Cable Type | Breakout AOC |
| Wavelength | 850nm |
| Minimum Bend Radius | 30mm |
| Transmitter Type | VCSEL |
| 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 |
Applications
In 400G Ethernet data center and cloud network environments, the 400G OSFP IHS/Finned Top to 4 x 100G QSFP28 Active Optical Breakout AOC provides a factory terminated 400Gbps link between OSFP (IHS/Finned Top) to 4x QSFP28 ports. This unit is supplied at 1m (3ft)~30m (98ft). One port becomes 4x QSFP28, a common pattern for connecting newer aggregation ports to an installed base of lower speed equipment. If your project needs a specific vendor coding or custom label, our production line handles it as a routine step before packing. The link runs 8x 50G-PAM4 to Quad 4x 25G-NRZ modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with CMIS 4.0, SFF-8636, IEEE 802.3bs-400GAUI-8, IEEE802.3bm-CAUI-4, OSFP MSA, SFF-8661, SFF-8639. It plugs into any standards-based OSFP (IHS/Finned Top) to 4x QSFP28 port, and compatibility coding for specific switch or router brands can be done in our factory before shipment.
Ordering Information
This model is supplied at 1m (3ft)~30m (98ft) under part number OSFP-400G-4Q4xNAOxxx. Other lengths of the same assembly can be produced on request.
Quality and Testing
Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.
Packaging Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.
OEM and Custom Orders
We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.
Worldwide Delivery
We ship to customers around the world every week. Express couriers handle most orders door to door in a few days; larger consignments go by air or sea to keep freight costs down. Tracking information is provided for every shipment, and we are flexible on shipping accounts and forwarders.



