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The NVIDIA Certified DGX Spark Stacking Cable QSFP/CX7 is a high-performance interconnect solution designed specifically for connecting NVIDIA DGX Spark AI systems. Featuring QSFP to QSFP112 connectivity with a compact 400mm (1.3ft) cable length, this cable enables ultra-fast node-to-node communication for distributed AI workloads, large language model training, and accelerated data synchronization between DGX Spark systems.