Add-On QDD-4QSFP56-400-CU1-5M-AO 400G-CU DAC Cable

Overview

The Add-On QDD-4QSFP56-400-CU1-5M-AO is a 5-meter passive direct attach copper (DAC) cable designed for high-density 400Gbps networking. It terminates in QSFP56 connectors on both ends, providing a cost-effective, low-latency solution for short-reach interconnects within racks or between adjacent racks. This cable is ideal for connecting high-performance switches, servers, or storage devices where direct copper connectivity is preferred for simplicity and power efficiency.

Compatibility

This cable is engineered to be compatible with Cisco networking equipment, specifically supporting QSFP56 ports operating at 400Gbps. It is suitable for use with Cisco Nexus 9000 series switches and other platforms that utilize the QSFP56 form factor for 400GbE connectivity. Always verify your specific switch or network interface card (NIC) supports 400Gbps QSFP56 passive DACs.

Installation Notes

Ensure the QSFP56 ports on both devices are clean and free of debris before insertion. The connectors are keyed to prevent incorrect orientation. Apply firm, even pressure to seat the connector fully until it clicks into place. The passive nature of this cable means it draws no power from the host ports, simplifying deployment and eliminating potential power conflicts. Maximum recommended cable length for 400Gbps passive copper is typically 5 meters to maintain signal integrity.