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This PCI-E X1 to 5-port USB3.0 multiplier riser card is professionally engineered for Bitcoin and cryptocurrency mining rig construction. It converts one motherboard PCIe X1 slot into five usable USB3.0 interfaces to connect multiple GPU riser cables, greatly expanding available expansion slots and maximizing motherboard utilization. Upgraded stable circuit layout effectively cuts down signal interference and unexpected device dropout under continuous high-load mining operation. The card features universal cross-system compatibility covering Windows, Linux and Mac OS, suitable for most NVIDIA and AMD mining graphics card setups. Adopts plug-and-play design for fast installation without extra driver configuration, an essential auxiliary component for DIY home mining rig and small mining farm setup to streamline internal wiring and save cabinet space.