OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT 400G OSFP 8 x 50G PAM4 RHS/Flat Top to 2 x 200G QSFP56 4 x 50G PAM4 Active Optical Breakout Cable, 20m (66ft)
This page gives procurement and network teams a precise reference for Generic OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT: a 400G AOC assembly in a fixed 20m (66ft) configuration. The OSFP (RHS/Flat Top) to 2x QSFP56 interface, HT ordering identity and verified specifications are presented together so the required cable can be matched to the bill of materials without confusing it with another length.
OEM Part Number: OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FTHT Part Number: OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT
Product Highlights
- HT-manufactured AOC assembly in 20m (66ft)
- 400G connectivity at 400Gbps
- Interface configuration: OSFP (RHS/Flat Top) to 2x QSFP56
- Fixed length and part number: 20m (66ft), OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT
- Cable construction: Breakout AOC
- Maximum power consumption: 10W (OSFP End) 5.5W (QSFP56 Per End)
- Minimum bend radius: 30mm
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (RHS/Flat Top) to 2x QSFP56 |
| Max. Data Rate | 400Gbps |
| Cable Length | 20m (66ft) |
| Cable Type | Breakout AOC |
| Wavelength | 850nm |
| Minimum Bend Radius | 30mm |
| Transmitter Type | VSCEL |
| Receiver Type | PIN |
| Max. Power Consumption | 10W (OSFP End) 5.5W (QSFP56 Per End) |
| Jacket Material | OFNP |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Modulation Format | 8x 50G-PAM4 to Dual 4x 50G-PAM4 |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | CMIS 4.0, SFF-8636，IEEE 802.3 bs-2*200GAUI-4, IEEE 802.3 bs-200GAUI-4, OSFP MSA, SFF-8679, SFF-8661 |
Signal and Lane Configuration
The listed modulation format is 8x 50G-PAM4 to Dual 4x 50G-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.
Procurement and Port-Mapping Review
A useful purchase order should identify the host platform, the expected OEM code and the exact cable length as separate pieces of information. This prevents a physically similar assembly from being substituted when the port identification or reach is different. For mixed-length installations, prepare one order line per part number and reconcile each delivered cable with its intended pair of ports. For this assembly, the minimum bend radius is 30mm; the stated power consumption is 10W (OSFP End) 5.5W (QSFP56 Per End); the jacket material is OFNP.
Power and Thermal Planning
The rated power consumption is 10W (OSFP End) 5.5W (QSFP56 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.
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 determined by the host interface and protocol support. Listed interface and protocol references include CMIS 4.0, SFF-8636，IEEE 802.3 bs-2*200GAUI-4, IEEE 802.3 bs-200GAUI-4, OSFP MSA, SFF-8679, SFF-8661. Confirm that the host firmware and port configuration support the same operating mode.
Breakout Port Mapping
The OSFP (RHS/Flat Top) to 2x QSFP56 configuration divides the high-speed interface into multiple lower-speed connections. Verify the upstream lane assignment, downstream port speeds and breakout setting on the host before connecting the assembly. Each branch must attach to the correct remote interface.
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
At 20m (66ft), OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT should be planned as an extended equipment-room connection rather than a short in-rack jumper. Mark the complete vertical and horizontal route before installation, including every manager the cable will actually pass through. Support the integrated optical cable and both optical engines along that path and keep both ends free from pull loads. Within this family, OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-15M49FT is shorter at 15m (49ft), while OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-30M98FT is the next longer choice at 30m (98ft); comparing those two boundaries helps avoid both tension and unnecessary slack.
Position Within the Length Range
OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT occupies the middle of this family between OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-15M49FT at 15m (49ft) and OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-30M98FT at 30m (98ft). It adds 5m over the shorter option for extra routing clearance, while the next longer version adds another 10m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
Generic Compatibility and Factory Testing
Our procurement-oriented compatibility check begins with the OEM reference and ends with a live host link. We record the physical length separately from the identification configuration, so the cable supplied for this page remains the stated version rather than a generic length substitute. Both connectors are examined before the operating test, which includes receive activity and diagnostic indications.
Ordering Information
For a clear bill of materials, quote the OEM reference, HT part number, length and quantity on the same line. Add the switch or server model and software release when a pre-order review is required; project labels can repeat those details for receiving and installation teams. Quantity and any labeling instructions should be attached specifically to OSFP (RHS/Flat Top) to 2x QSFP56-400G-AOC-20M66FT.
Quality Assurance and Packaging
Before packing, the assembly is checked for connector condition, identification and link operation. Cables for multi-line orders can be labelled and grouped by part number, making it easier to match each length to the procurement record without opening every protective bag. Neutral packaging and customer-specific packing documentation are available on request.
Frequently Asked Questions
Is this an original equipment manufacturer cable?
No. It is manufactured by HT under our own manufacturer identity.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Will any matching connector operate at the same speed?
Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.
What details assist a compatibility review?
Provide the equipment manufacturer, model, port type, hardware revision and software release, together with the OEM reference, required length and quantity.
Shipping and Lead Time
Available stock is generally dispatched within one to three working days after order confirmation, with production lead times advised for larger quantities. Delivery can be arranged by courier, air freight or sea freight, and goods may instead be handed to an appointed forwarder or shipped on the customer’s courier account.