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Green circuit board with one PCIe x4 connector and four USB 3.0 ports

SMUGDESK

SMUGDESK PCIe X4 to 4 External PCIe USB 3.0 Multiplier Riser Card

SKU CH-QRMN-QW5NE

A PCIe X4 slot expands into four external PCIe ports via USB 3.0 for multi-GPU mining rigs

  • Expands one PCIe X4 slot into four external GPU ports for mining rigs
  • USB 3.0 connection removes chassis space limits for flexible hardware layout
  • Standard bracket fits PCIe X4, X8 and X16 slots on common mining motherboards
  • Stable chip design delivers reliable power and data for BTC and ETH mining
  • Supports Windows and Linux systems widely used on mining machines

PCIe X4 to 4 External Ports

This PCIe multiplier riser expands a single PCIe X4 slot into four independent external PCIe connections using USB 3.0 links. It is built for miners who need to attach multiple graphics cards to a motherboard with limited expansion slots. The adapter suits Windows and Linux mining rigs running Bitcoin or Ethereum workloads.

Installation and Common Issues

The card mounts in a standard PCIe bracket and fits X4, X8 or X16 slots without extra drivers on supported operating systems. USB 3.0 cables carry both data and power, so cable quality and secure seating determine stability. Loose connectors or undersized cables often cause intermittent device detection or hash-rate drops.

Capacity and Headroom

Four external ports let a single lane group serve up to four GPUs for parallel mining tasks. Bandwidth is shared across the USB 3.0 links, so heavy simultaneous loads can saturate the upstream X4 interface. The design targets mining workloads rather than high-throughput compute or gaming scenarios.

Highlights

  • Expands one PCIe X4 slot into four external GPU ports for mining rigs
  • USB 3.0 connection removes chassis space limits for flexible hardware layout
  • Standard bracket fits PCIe X4, X8 and X16 slots on common mining motherboards
  • Stable chip design delivers reliable power and data for BTC and ETH mining
  • Supports Windows and Linux systems widely used on mining machines

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the riser card is functioning correctly after installation?

Check that the operating system detects all four external PCIe ports and that each connected GPU appears in Device Manager on Windows or lspci on Linux without error codes.

What components are included with the riser card and what must be purchased separately?

The package contains the PCIe X4 multiplier board with standard bracket; USB 3.0 cables, GPU riser cables and power adapters for the graphics cards are not included.

Which PCIe slot version on my motherboard is compatible with this multiplier?

The card fits PCIe X4, X8 and X16 slots and operates at X4 electrical width, so any of those slot sizes will work.

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