OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT 400G OSFP IHS/Finned Top to 4 x 100G QSFP56 2 x 50G PAM4 Passive Copper Breakout Cable, 2.5m (8ft)

With a fixed 2.5m (8ft) cable and OSFP (IHS/Finned Top) to 4x QSFP56, the OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT compatible assembly simplifies 400G deployment. It is manufactured and tested by HT for multi-vendor equipment.

OEM Part Number: OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FTHT Part Number: OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT

Product Highlights

• HT-manufactured DAC assembly in 2.5m (8ft)
• 400G connectivity at 400Gbps
• Interface configuration: OSFP (IHS/Finned Top) to 4x QSFP56
• Fixed length and part number: 2.5m (8ft), OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT
• Cable construction: Passive Twinax
• Conductor specification: 28AWG
• Maximum power consumption: 0.1W (OSFP End) 0.1W (QSFP56 Per End)
• Minimum bend radius: 30mm

The listed modulation format is 8x 50G-PAM4 to Quad 2x 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.

The intended application is determined by the host interface and protocol support. Listed interface and protocol references include OSFP MSA, IEEE 802.3cd, CMIS v4.0. Confirm that the host firmware and port configuration support the same operating mode.

The OSFP (IHS/Finned Top) to 4x 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.

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.

The 2.5m (8ft) version is useful when a two-metre run would leave insufficient working slack. Before installation, check the complete horizontal and vertical path so that OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT reaches both ports without tension at either connector.

OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT occupies the middle of this family between OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2M7FT at 2m (7ft) and OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-3M10FT at 3m (10ft). It adds 0.5m over the shorter option for extra routing clearance, while the next longer version adds another 0.5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

The rated power consumption is 0.1W (OSFP End) 0.1W (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.

This assembly uses 28AWG conductors, PVC (OFNR) 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.

The assembly is configured for equipment that recognizes OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT. Before shipment, we inspect both connectors and verify identification, link establishment and electrical continuity, link stability and diagnostic readouts. Host hardware and firmware revisions can affect third-party cable acceptance, so customers can provide the equipment model and software release for a pre-order compatibility review.

Use part number OSFP (IHS/Finned Top) to 4x QSFP56-400G-DAC-2.5M8FT for the 2.5m (8ft) assembly. For mixed-length projects, list each required part number and quantity separately so that every cable can be tested and packed according to its intended installation.

Before packing, our team checks the cable jacket, connector boots, latches and identification of each assembly. The cable is then secured in a loose coil and protected against dust and connector impact. Neutral packaging, customer part-number labels and project-specific carton lists can be supplied on request.

Stock items are generally dispatched within one to three working days after order confirmation. DHL, UPS, FedEx, TNT and EMS are available for international delivery; larger consolidated orders can move by air or sea freight. Customer courier accounts and nominated forwarders are accepted.