Description NVIDIA/Mellanox Compatible 0.5m (1.6ft) 400G OSFP Finned Top Passive DAC Cable is a very short-reach 400Gbps copper solution for adjacent equipment. The finned top architecture allows for enhanced airflow and heat dissipation in high-density Mellanox data center fabrics. This passive cable delivers zero power consumption and maximum signal integrity for critical 400G link applications.