The 400G OSFP Passive Direct Attach Copper (DAC) Twinax cable provides a high-performance OSFP-to-OSFP copper interconnect designed for next-generation 400G Ethernet deployments. Featuring the OSFP finned-top form factor, this cable is optimized for air-cooled switching platforms where thermal efficiency and signal integrity are critical. Built with ultra-low-loss materials, square-ring contacts, and an 8-wire twisted pair construction, the cable delivers excellent mechanical durability, improved bending performance, and stable high-speed transmission. It is validated in live switching systems to ensure optimal end-to-end signal integrity in demanding environments.

This passive DAC solution is ideal for very short-reach 400G connections between switches and routers within the same rack or between adjacent racks. It is widely deployed in Software-Defined Networking (SDN), Machine Learning (ML), AI clusters, and cloud computing infrastructures.

• Supports 400G Ethernet connectivity

• OSFP (Finned Top) to OSFP (Finned Top) direct copper interconnect

• 8× 50G PAM4 electrical lanes

• Passive DAC design (no active components)

• Ultra-low loss construction for high signal integrity

• Optimized for air-cooled switch platforms

• Low power consumption (=0.1W per end)

• Ideal for short-distance intra-rack and inter-rack links

• Form Factor: OSFP (Finned Top) to OSFP (Finned Top)

• Maximum Data Rate: 400Gbps

• Media Type: Copper

• Cable Type: Passive DAC Twinax

• Wire Gauge: 30AWG

• Modulation Format: 8× 50G PAM4

• Maximum Power Consumption: 0.1W per connector end

• Minimum Bend Radius: 34.5 mm

• Operating Temperature: 0 to 70°C

• Jacket Material: PVC

• Standards & Protocols: OSFP MSA, IEEE 802.3cd 100GBASE-CR2, CMIS 4.0

• Warrenty: 5 years