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This PCIe 1 to 4 expansion card is specially designed for multi-GPU mining rigs. It expands a single PCIe 1X interface into 4 PCIe X16 slots, greatly increasing the number of accessible graphics cards. Adopting USB 3.0 transmission design, it delivers stable signal output and reduces data latency. High-quality circuit board and stable chip ensure continuous and reliable operation for long-hour mining work. Simple installation without extra software, ideal for Bitcoin, crypto mining and industrial multi-GPU expansion scenarios.