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Green PCIe adapter card with SFF-8611/8612 OCuLink port and two metal brackets

Fervit

Fervit PCIe 4.0 x4 to Oculink Adapter SFF-8611/8612 with 8cm 12cm Bracket

SKU CH-5B16-5EPRS

Converts a PCIe 4.0 x4 slot to an OCuLink SFF-8611/8612 port for GPU or SSD expansion at up to 64 Gbps, with standard and low-profile brackets included

  • PCIe 4.0 x4 delivers up to 64 Gbps bandwidth for GPU or SSD expansion
  • Backward compatible with PCIe 3.0 and 2.0 systems for broad platform support
  • Converts PCIe slot to OCuLink SFF-8611/8612 connector for high-speed I/O
  • Includes both standard-height and low-profile brackets for flexible chassis fit
  • Supports SAS-4 24 Gbps connectivity for enterprise storage applications

PCIe 4.0 x4 OCuLink Adapter

This Fervit adapter converts a PCI Express 4.0 x4 slot into an OCuLink SFF-8611 or SFF-8612 connector. It targets builders adding external GPU docks or high-speed SSD enclosures to systems that lack native OCuLink ports. Backward compatibility with PCIe 3.0 and 2.0 broadens the range of supported host platforms.

Sustained 64 Gbps throughput

The adapter maintains PCIe 4.0 signalling at up to 64 Gbps across the link, matching the bandwidth ceiling of the host slot. Because the PCB adds no active components, thermal behaviour mirrors the host slot itself; no throttling is introduced by the adapter during prolonged GPU compute or sequential SSD workloads.

Dual-bracket installation

Both full-height and low-profile brackets ship in the box, covering standard and compact chassis without extra purchases. Alignment pins on the bracket match the fixing holes on the board, so the connector seats squarely. The only common issue is forgetting to secure the optional OCuLink cable, which can unseat under vibration.

Highlights

  • PCIe 4.0 x4 delivers up to 64 Gbps bandwidth for GPU or SSD expansion
  • Backward compatible with PCIe 3.0 and 2.0 systems for broad platform support
  • Converts PCIe slot to OCuLink SFF-8611/8612 connector for high-speed I/O
  • Includes both standard-height and low-profile brackets for flexible chassis fit
  • Supports SAS-4 24 Gbps connectivity for enterprise storage applications

Specifications

BrandFervit

Questions about this item

Will the PCIe 4.0 x4 adapter add noticeable heat or fan noise when it runs all day?

The adapter is a passive board with no fan or active cooling, so it adds no noise and negligible heat to the system.

What must I already own to use the SFF-8611/8612 adapter?

You need a free PCIe x4 slot, an OCuLink cable, and the target device such as a GPU or SSD that connects via that cable.

How does the 64Gbps adapter behave with my older PCIe 3.0 graphics card?

It is backward compatible with PCIe 3.0 and 2.0, so the card will run at its native generation speed without extra configuration.

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