800G OSFP Finned Top to 2×400G QSFP112 Passive Breakout DAC Cable
The 800G OSFP to 2×400G QSFP112 Passive Direct Attach Copper (DAC) breakout cable is designed for high-speed 800G Ethernet switch-to-NIC connectivity in next-generation data center environments.
This passive copper solution converts a single 800G OSFP finned-top port—typically used on high-performance switches—into two independent 400G QSFP112 ports commonly deployed in network interface cards (NICs). Operating without active components, it delivers reliable, ultra-low-latency connectivity with near-zero power consumption.
The cable is fully compliant with OSFP MSA, QSFP112 MSA, IEEE 802.3ck, and CMIS Rev 5.0, ensuring interoperability across 800G and 400G Ethernet platforms.
Passive DAC technology remains one of the most cost-effective and power-efficient solutions for short-distance interconnects inside telecom and data center equipment rooms, particularly in AI clusters, hyperscale cloud deployments, and HPC environments.
Key Features
• Converts 1×800G OSFP (Finned Top) to 2×400G QSFP112
• Passive Direct Attach Copper breakout design
• Ultra-low latency and minimal power draw
• Optimized for switch-to-NIC connectivity
• Cost-effective alternative to optical breakout solutions
• Ideal for short intra-rack and inter-rack links
Technical Specifications
• Form Factor: OSFP (Finned Top) to 2× QSFP112
• Maximum Data Rate: 800Gbps aggregate
• Media Type: Copper
• Cable Type: Passive Breakout DAC Twinax
• Cable Length: 2 meters (7 feet)
• Wire Gauge: 28AWG
• Modulation Format:
o OSFP: 8×100G-PAM4
o QSFP112: 4×100G-PAM4 per leg
• Maximum Power Consumption:
o 0.1W (OSFP end)
o 0.1W per QSFP112 end
• Minimum Bend Radius: 40.5 mm
• Jacket Material: PVC
• Operating Temperature: 0 to 70°C
• Application: 800G / 400G Ethernet
• Standards & Protocols: OSFP MSA, QSFP112 MSA, IEEE 802.3ck, CMIS v5.0
• Warranty: 5 Years