OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT 400G OSFP 4 x 100G PAM4 RHS/Flat Top to 400G QSFP-DD 4 x 100G PAM4 Passive Copper Twinax Cable, 1m (3ft)

Use the OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT compatible assembly where a 400G connection is required between compatible ports. This page covers the 1m (3ft) version only, with its own HT part number, specifications and compatibility verification.

OEM Part Number: OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FTHT Part Number: OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT

Product Highlights

• HT-manufactured DAC assembly in 1m (3ft)
• 400G connectivity at 400Gbps
• Interface configuration: OSFP (RHS/Flat Top) to QSFP-DD
• Fixed length and part number: 1m (3ft), OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT
• Cable construction: Passive Twinax
• Conductor specification: 30AWG
• Maximum power consumption: ≤0.1W
• Minimum bend radius: 34.5mm

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.

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.

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.

At 1m (3ft), OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT is a practical choice for direct connections within one rack. Route the cable along the intended management path rather than pulling it diagonally across adjacent connectors, and leave enough clearance for insertion, removal and front-panel airflow.

OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT occupies the middle of this family between OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-0.5M2FT at 0.5m (2ft) and OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1.5M5FT at 1.5m (5ft). 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.

This assembly uses 30AWG conductors, PVC jacket, minimum bend radius 34.5mm. 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.

The HT cable carries the compatibility configuration associated with OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT, while its mechanical assembly remains the fixed 1m (3ft) version described here. Incoming inspection, connector examination and a live link test are completed before packing. Customers with unusually old or new Generic software can request a pre-order check.

Quote HT part number OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT with the required quantity. The 1m (3ft) length is fixed for this part number; if a different length is needed, select its corresponding page and OEM reference from the length list above. Standard HT labels and project-specific packaging are available.

HT inspects and tests every completed cable before it enters finished stock. Protective caps or covers are fitted where applicable, followed by anti-static or tray packaging and an outer carton. Custom labels can cross-reference the customer part number, OSFP (RHS/Flat Top) to QSFP-DD-400G-DAC-1M3FT and the 1m (3ft) length for easier inventory control.

Lead time for ordinary configurations is normally one to three working days, while production quantities are confirmed with the order. We can arrange express courier or economy freight according to destination and carton volume, or hand the shipment to your appointed logistics provider.