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Green circuit board with a gold PCIe x4 edge connector and one silver Oculink SFF-8612 port

LetLinkSo

LetLinkSo LLS-CD-1PC1OC-01 PCIe 4.0 x4 to Oculink SFF-8612 Internal Adapter Card

SKU CH-JDAT-TQSN0

Adds one internal Oculink SFF-8612 x4 port via a PCIe 4.0 x4 slot for NVMe SSDs or eGPUs at 64 Gbps

  • TypePCIe to Oculink Adapter
  • StandardPCIe 4.0
  • Data Transfer Rate16GT/s (per lane)
  • CompatibilityPCIe 4.0
  • SpecificationsPCIe 4.0 x4 to 1-port Oculink
  • FeaturesEXPANDED CONNECTIVITY

Adapter Type PCIe x4 to 1-Port Oculink / Internal

  • Add an Oculink SFF-8612 x4 port via a PCIe 4.0 x4 slot for NVMe SSDs or eGPUs
  • 16 GT/s per lane across four lanes delivers 64 Gbps total bandwidth for high-performance workloads
  • Welded connector housing to PCB reduces fragility and ensures a secure plug-and-unplug experience
  • Amphenol connectors minimise signal interference for stable and reliable data transmission
  • Supports bootable devices, expanding system startup and configuration options

PCIe 4.0 x4 to Oculink SFF-8612 Adapter

This adapter adds a single Oculink SFF-8612 x4 port to a PCIe 4.0 x4 slot, letting you connect NVMe SSDs or eGPUs that use an SFF-8611 cable. It is aimed at builders who need an extra high-speed internal link without occupying an M.2 socket. The card supports the PCIe 4.0 standard at 16 GT/s per lane across four lanes. Total bandwidth reaches 64 Gbps for demanding storage or GPU workloads.

Check slot version and cable type

Verify your motherboard has a free PCIe x4 slot that runs at Gen 4.0, 3.0, 2.0 or 1.0; the card is backward compatible with all those generations. Ensure the target device uses an internal SFF-8611 Oculink cable, not an external variant. The board accepts Windows and Linux without extra drivers, but confirm your BIOS can initialise the connected device if you plan to boot from it. No external power connector is present on the card.

Welded Amphenol connector and boot support

The Oculink connector housing is welded to the PCB for a more secure fit and reduced fragility during repeated plug cycles. Amphenol-branded connectors are used to minimise signal interference and keep transmission stable. The adapter supports bootable devices, so a connected NVMe SSD can serve as a system drive. The package contains only the adapter card; the SFF-8611 cable and any drive or eGPU enclosure must be sourced separately.

Highlights

  • Add an Oculink SFF-8612 x4 port via a PCIe 4.0 x4 slot for NVMe SSDs or eGPUs
  • 16 GT/s per lane across four lanes delivers 64 Gbps total bandwidth for high-performance workloads
  • Welded connector housing to PCB reduces fragility and ensures a secure plug-and-unplug experience
  • Amphenol connectors minimise signal interference for stable and reliable data transmission
  • Supports bootable devices, expanding system startup and configuration options

Specifications

BrandLetLinkSo
SeriesPCle to Oculink Adapter
ModelLLS-CD-1PC1OC-01
TypePCIe to Oculink Adapter
StandardPCIe 4.0
Data Transfer Rate16GT/s (per lane)
CompatibilityPCIe 4.0
SpecificationsPCIe 4.0 x4 to 1-port Oculink
FeaturesEXPANDED CONNECTIVITY
Weight1 lbs
Package Contents1 x PCIe 4.0 x4 to 1-port Oculink Internal Adapter

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Questions about this item

What comes in the box and what extra cable do I need to connect an NVMe drive?

The package contains one PCIe 4.0 x4 to Oculink SFF-8612 internal adapter card; you must purchase an SFF-8611 cable separately to link an NVMe SSD or eGPU.

Which Oculink connector version does this card use?

The card provides a single Oculink SFF-8612 x4 slot, matching the internal SFF-8612 interface shown in the specifications.

What does the 16 GT/s per lane figure mean for real-world throughput?

Across four lanes the adapter delivers up to 64 Gbps of PCIe 4.0 bandwidth, enabling full-speed operation for NVMe storage or eGPU devices connected via the Oculink port.

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