Cable Types: O2O224-1.6T-DACH

Brand: NVIDIA/Mellanox (InfiniBand)

Cable : 1m (3ft) NVIDIA/Mellanox Compatible 1.6T DAC OSFP224 IHS/Closed Finned Top 8x200G PAM4 to 2x800G OSFP224 RHS/Flat Top 4x200G PAM4 InfiniBand XDR Passive Direct Attach Copper Splitter Cable for Quantum-X800 Q3400-RA Switch to 2x800G ConnectX-8/9 OSFP SuperNICs (C8180 / C9180)

The NVIDIA/Mellanox compatible 1.6T to 2x800G OSFP224 Passive Direct Attach Copper Splitter Cable (DAC) is an advanced breakout interconnect solution based on cutting-edge 224G SerDes architecture. Designed for high-density, ultra-low latency AI clusters and High-Performance Computing (HPC) networks, the O2O224-1.6T-DACH cable splits a single 1.6Tb/s (8x200G PAM4) twin-port OSFP224 host connection into two independent 800Gb/s (4x200G PAM4) OSFP224 endpoints.

Featuring an Integrated Heat Sink (IHS / Closed Finned Top) connector shell on the 1.6T switch end and two Riding Heat Sink (RHS / Flat Top) connectors on the breakout end, this cable provides optimized thermal management across air-cooled switches and dense server environments. It is purpose-built to connect 1.6T InfiniBand XDR switches—such as the Quantum-X800 Q3400-RA—directly to two 800G SuperNICs, including the NVIDIA ConnectX-8 (C8180) and NVIDIA ConnectX-9 (C9180) platforms.

Key Features

• 1.6T to 2x800G Breakout Architecture: Converts a single 1.6Tb/s OSFP224 twin-port (8x200G PAM4) into two 800Gb/s OSFP224 ports (4x200G PAM4) for maximum switch port efficiency.
• 224G SerDes & InfiniBand XDR Performance: Engineered around 224G SerDes technology to deliver high signal integrity and eliminate bandwidth bottlenecks in scale-out AI factories.
• Hybrid IHS to RHS Thermal Design: Utilizes an IHS (Finned Top) shell on the switch side for maximum heat dissipation and RHS (Flat Top) shells on the NIC side for tight server cage compatibility.
• Near-Zero Power & Ultra-Low Latency: Energy-efficient passive copper design consumes less than 0.1W while providing zero digital processing latency across short-reach links.
• Optimized for AI Accelerator Topologies: Perfectly suited for Quantum-X800 Q3400-RA switch-to-SuperNIC connections (NVIDIA C8180 & C9180) and high-density GPU server racks.

Technical Specifications