Description This Cisco QDD-4ZQ100-CU1M compatible 1m breakout cable provides a reliable 400G to quad 100G link via 30AWG passive copper twinax technology. Designed for QSFP-DD ports, it ensures stable signal integrity and ultra-low latency for next-generation data center environments. This direct attach copper solution offers an energy-efficient and cost-effective interconnect for modern high-bandwidth networking.