OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT 400G OSFP 4 x 100G PAM4 RHS/Flat Top to 400G QSFP-DD 4 x 100G PAM4 Passive Copper Twinax Cable, 2m (7ft)
The assembly listed here is the 2m (7ft) member of the OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT product family for Generic equipment. It provides 400G DAC connectivity through OSFP (RHS/Flat Top) to QSFP-DD. Project teams can use the detailed table, related references and documentation-oriented packing information to keep each delivered cable aligned with its planned endpoints.
OEM Part Number: OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FTHT Part Number: OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT
Product Highlights
- HT-manufactured DAC assembly in 2m (7ft)
- 400G connectivity at 400Gbps
- Interface configuration: OSFP (RHS/Flat Top) to QSFP-DD
- Fixed length and part number: 2m (7ft), OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT
- Cable construction: Passive Twinax
- Conductor specification: 28AWG
- Maximum power consumption: ≤0.1W
- Minimum bend radius: 40.5mm
Specifications
| HT Part Number | OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (RHS/Flat Top) to QSFP-DD |
| Max Data Rate | 400Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length | 2m (7ft) |
| Wire AWG | 28AWG |
| Minimum Bend Radius | 40.5mm |
| Power Consumption | ≤0.1W |
| Jacket Material | PVC |
| Temperature | 0 to 70°C (32 to 158°F) |
| Application | 400G Ethernet |
| Modulation Technology | OSFP-4x100GPAM4QDD-4x100GPAM4 |
| Protocols | IEEE 802.3cd, OSFP MSA, QSFP-DD MSA, CMIS Rev4.0, SFF-8417 |
Power and Thermal Planning
The rated power consumption is ≤0.1W. 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 28AWG conductors, PVC jacket, minimum bend radius 40.5mm. 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 400G Ethernet. Listed interface and protocol references include IEEE 802.3cd, OSFP MSA, QSFP-DD MSA, CMIS Rev4.0, SFF-8417. Confirm that the host firmware and port configuration support the same operating mode.
Passive Copper Operation
A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.
Length Selection and Installation Planning
OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT provides 2m (7ft) for connections between separated rack units or nearby equipment positions. Plan the route around cable managers and power cords, keeping the assembly free from connector strain while avoiding a large obstruction in the airflow path.
Position Within the Length Range
OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT is the longest of 4 verified length options in this family. Compared with OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1.5M5FT at 1.5m (5ft), it provides 0.5m of additional reach for a longer vertical drop, a wider rack or an adjacent-cabinet route. Confirm that the complete path requires this length, because unused slack still needs supported, bend-safe storage.
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 assembly, the listed conductor specification is 28AWG; the minimum bend radius is 40.5mm; the stated power consumption is ≤0.1W; the jacket material is PVC.
Generic 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. The check includes link stability and diagnostic indications, followed by a final inspection of both ends.
Frequently Asked Questions
Is this an original equipment manufacturer cable?
No. It is manufactured by HT under our own manufacturer identity.
Can different brands be connected with the same assembly?
Only where both hosts explicitly support the complete interface and compatibility arrangement. Document each end and select the appropriate brand-specific product when required.
Does this order code cover multiple lengths?
No. OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-2M7FT refers here to 2m (7ft). Every other verified length has a separate part number and page in the length list.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
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. This page’s fixed configuration is 2m (7ft); another length must be quoted under its corresponding part number.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. Worldwide courier services are available, with air or sea freight for consolidated shipments; freight-collect delivery and coordination with a customer’s logistics provider can be arranged.
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. Neutral packaging and customer-specific packing documentation are available on request.
