High-Density 800G OSFP Passive Twinax Cable — Flat-Top OSFP to Flat-Top OSFP (Multiple Lengths, Server-Grade)
Cost-efficient, low-latency OSFP passive twinax cable for short-reach 800G links — designed for direct attach connections between high-performance NICs and switches in rack environments.
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Form factor: OSFP flat-top to OSFP flat-top direct attach cable (Passive Twinax)
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Nominal speed: 800G interconnect (designed for 800G OSFP links).
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Cable type: Twinax copper assembly, shielded for signal integrity
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Lengths: Examples include 0.5 m, 1 m, 1.5 m, 2 m (custom lengths may be offered).
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Typical use: Short-reach rack connectivity (server ↔ switch, adjacent rack links)
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Power: Passive (no external power required) — lower device power draw vs active optics.
This passive twinax cable provides a reliable, power-free way to connect OSFP ports at 800G line rates over short distances. Built for dense server and switch deployments, the flat-top OSFP ends and rugged cable assembly minimize insertion profile and deliver consistent, low-latency electrical performance ideal for top-of-rack and adjacent-rack connections.
Key Benefits
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Ready for high-bandwidth 800G interconnects without active electronics — lower cost and power versus optical transceivers.
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Flat-top OSFP connectors reduce mechanical interference in densely populated racks.
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Short-reach optimized: ideal for server-to-switch, top-of-rack uplinks or direct server pairs.
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Multiple standard cable lengths available for flexible rack designs (e.g., 0.5 m, 1 m, 1.5 m, 2 m).
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Vendor-compatible with major Mellanox/NVIDIA and similar OSFP NICs and switches (see compatibility).
Compatibility
Designed to be compatible with OSFP-equipped NICs and switches from major vendors. Example compatibility listing on the original product page includes Mellanox / NVIDIA OSFP-type NIC models (e.g., MCP4Y10-N00A-FLT) and similarly configured OSFP ports — always confirm mechanical fit and vendor compatibility with your specific hardware before purchase.
Recommended Applications
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High-density data center top-of-rack uplinks
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Server clustering and HPC node interconnects
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Short-reach copper replacement where optical channels are not required
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Lab and test environments for 800G equipment validation
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