SMUGDESK PCIe 4X to 4×USB 3.0 Multiplier Riser Card

Multi-GPU Mining Expansion

This PCIe 4X multiplier card splits a single slot into four USB 3.0 signal ports, letting builders attach four PCIe 16X GPU risers for a dense mining rig. It is designed for operators who need more GPU positions than the motherboard provides and want a cost-effective way to scale hash rate. A dedicated control chip keeps signals stable during 24-hour continuous operation.

Builders with limited slots; not for general I/O

The card suits miners running Windows or Linux mining OSes on boards with spare PCIe X4, X8 or X16 slots and a standard metal bracket mounting point. It is not for users who need extra USB ports for peripherals, storage drives or other non-GPU devices, nor for systems that lack the physical space or power delivery for four additional graphics cards.

One PCIe 4X to four USB 3.0 ports

The single specification that decides fit is the 1-to-4 lane split: one PCIe 4X input becomes four USB 3.0 outputs wired for PCIe 16X risers. If the motherboard cannot spare a compatible PCIe slot or the chassis cannot accommodate four riser cables and GPUs, this adapter will not solve the expansion problem.