Cisco QDD-4ZQ100-CU2-5M DAC Cable 2.5 m | 100G, QSFP-DD, Enterprise — QDD-4ZQ100-CU2-5M-AO

Keep short-reach 100G links clean, direct, and cost-controlled with this Cisco-compatible QSFP-DD DAC cable from AddOn Networks. Designed for tightly packed data center racks, the 2.5 m passive copper assembly delivers a straightforward path between adjacent switches, top-of-rack gear, and high-density aggregation layers without the added cost or power draw of optics. For infrastructure teams standardizing on direct attach cabling, this cable supports fast deployment and consistent physical-layer performance in environments where link distance is known in advance. The fixed 2.5 m length helps reduce slack management issues while preserving a tidy rack layout. It is a practical choice for short interconnects that still demand dependable throughput and vendor-compatible fit. This cable is well suited for procurement teams looking to extend the life of existing Cisco-aligned infrastructure with a qualified third-party alternative. It offers the simplicity of passive copper for short runs, making it a strong fit for budget-conscious upgrades where optical transceivers would add unnecessary cost and complexity. Ideal For Connect adjacent top-of-rack switches in a data center row Link aggregation switches to leaf switches over short fixed distances Replace optical modules in cost-sensitive 100G rack interconnects Standardize short copper runs in high-density switching environments Why This Product 1 Passive copper avoids the cost and power of optical transceivers 2 2.5 m length suits adjacent rack connections better than longer cables 3 QSFP-DD compatibility supports high-density 100G switching platforms 4 Direct attach design keeps short links simple and predictable