PCIe X1 to 4 PCIe X16 Riser Card, PCI-E 1 to 4 Port Multiplier External GPU Expansion Adapter for Mining Rig

This PCIe X1 to 4 X16 port multiplier riser card is specially customized for multi-GPU mining rigs, solving the pain point that mainstream motherboards only equip limited native PCIe slots and cannot install multiple graphics cards at the same time. It adopts active ASM1184E PCIe switch chip with independent cooling heatsink, which evenly splits PCIe X1 lane signals into four separate PCIe X16 physical slots. Each downstream slot can independently connect mining graphics cards via standard PCIe X16 GPU risers, fully meeting the bandwidth demand of cryptocurrency computing workloads without obvious hash rate loss.

The host card inserts into motherboard PCIe X1 slot, transmits data to the 4-port expansion board through a shielded USB 3.0 cable; the expansion board reserves dedicated 4Pin power interface to take power directly from PSU, which avoids burning motherboard PCIe slots caused by excessive power consumption of multiple GPUs. All PCIe contacts use gold-plated process to resist oxidation and ensure stable signal transmission during months of continuous mining operation. No complicated driver or BIOS modification required, plug-and-play after hardware assembly. Widely applicable to BTC/ETH/ETC multi-card mining rigs, multi-GPU rendering workstations, and small chassis expansion builds.

The split external layout makes GPU placement flexible, convenient for heat dissipation layout of dense mining racks.