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Green circuit board with one PCIe x1 edge connector and four x16 slots linked by blue USB 3.0 cables

SMUGDESK

SMUGDESK PCIe 1X to 4 PCIe 16X USB3.0 Riser Card Data Adapter

SKU CH-6MK5-GT4MF

A single PCIe 1X slot expands into four external PCIe 16X ports via USB3.0 for multi-GPU mining rigs

  • One PCIe 1X slot becomes four external PCIe 16X ports via USB 3.0
  • Supports up to 16 graphics cards for expanded mining capacity
  • USB 3.0 cable allows flexible distance layout inside large rig frames
  • Optimised circuit design enables stable 24-hour continuous mining operation
  • Works with mainstream Windows and Linux mining operating systems

PCIe 1X to 4 PCIe 16X Multiplier

This adapter splits a single PCIe 1X host slot into four independent external PCIe 16X ports using a USB3.0 connection. It is built for miners who need to install multiple graphics cards on a motherboard with limited onboard slots. The design supports long-term 24-hour continuous stable mining operation on mainstream Windows and Linux mining operating systems.

Installation and Common Issues

The card plugs into an existing PCIe 1X slot and links to the four external ports through standard USB3.0 cables, allowing flexible distance layout inside a large mining rig frame. No extra drivers are required beyond the OS support already noted. The main limitation is that each port shares the original 1X bandwidth, so high-throughput cards will run at reduced speed compared with a native 16X slot.

Sustained Load Behaviour

The circuit is optimised for 24-hour continuous stable mining operation rather than short bursts. Under constant load the shared 1X upstream link becomes the bottleneck, so aggregate throughput stays limited to the single-lane capacity. Thermal output from the adapter itself remains low, but the connected GPUs must still be cooled adequately for non-stop use.

Highlights

  • One PCIe 1X slot becomes four external PCIe 16X ports via USB 3.0
  • Supports up to 16 graphics cards for expanded mining capacity
  • USB 3.0 cable allows flexible distance layout inside large rig frames
  • Optimised circuit design enables stable 24-hour continuous mining operation
  • Works with mainstream Windows and Linux mining operating systems

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the riser card is running a stable 24-hour mining session after setup?

Monitor the mining software for continuous hash-rate output across all four connected GPUs without drops or errors over a full 24-hour period.

What comes in the box and which cables must be purchased separately?

The package includes the PCIe 1X to 4 PCIe 16X riser board; you need to buy four USB3.0 cables and a power source for the GPUs separately.

Which version should I choose for a motherboard with only one PCIe 1X slot?

This single model splits one PCIe 1X host slot into four external PCIe 16X ports, so it is the only version needed for that configuration.

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