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A 50cm cable with a 38-pin SFF-8611 plug, a U.2 SFF-8639 socket and a 15-pin SATA power lead

Vszerda

Vszerda CAB861139 Mini SAS Oculink 4i to U.2 SFF-8639 PCIe 4.0 50cm SAS cable

SKU CH-8NJD-YJ4DD

Connects an Oculink 4i host port to a U.2 NVMe SSD with integrated SATA power over 50cm

  • PCIe 4.0 bandwidth for NVMe U.2 SSDs via SFF-8611 to SFF-8639 link
  • 32 AWG tinned copper with 15 µm gold contacts for durable signal integrity
  • Integrated 15-pin SATA power lead supplies drive power without extra adapters
  • 50 cm length fits server, NAS and high-end desktop chassis cleanly
  • 38-pin Oculink 4i host to U.2 target conversion for enterprise and DIY builds

Connection type and supported drives

This cable adapts an internal Oculink 4i (SFF-8611) host port to a U.2 (SFF-8639) target interface for NVMe SSDs. It is built for PCIe 4.0 bandwidth and will not work with SATA SSDs. Builders adding enterprise or high-capacity U.2/U.3 drives to a compatible motherboard or backplane use this link. It is not for systems that only offer SATA or M.2 slots without an Oculink header.

Build quality and daily handling

Signal wires are 32AWG tinned copper with 15µm gold-plated contacts for corrosion resistance and stable conductivity. A 15-pin SATA power lead is integrated so the drive receives power without a separate adapter. The 50cm length fits typical server, NAS and high-end desktop chassis while keeping routing tidy. The fixed connectors mean the assembly cannot be shortened or re-pinned in the field.

Upgrade path and when to choose it

Replaces a missing or too-short factory cable when a board provides an SFF-8611 port but the chassis needs a U.2 bay connection. The jump is worthwhile when the platform already exposes an Oculink 4i lane and you want full PCIe 4.0 throughput to a U.2 NVMe drive. If the host only has SATA or standard M.2 slots this cable cannot bridge the gap.

Highlights

  • PCIe 4.0 bandwidth for NVMe U.2 SSDs via SFF-8611 to SFF-8639 link
  • 32 AWG tinned copper with 15 µm gold contacts for durable signal integrity
  • Integrated 15-pin SATA power lead supplies drive power without extra adapters
  • 50 cm length fits server, NAS and high-end desktop chassis cleanly
  • 38-pin Oculink 4i host to U.2 target conversion for enterprise and DIY builds

Specifications

No published specifications for this item yet.

Questions about this item

What PCIe generation does the SFF-8611 to SFF-8639 cable support?

The cable supports PCIe 4.0 transfer speeds for NVMe U.2 SSDs.

What connectors and clearance does the 50cm cable require?

It needs a 38-pin Oculink 4i (SFF-8611) host port, a U.2 (SFF-8639) drive bay, and a 15-pin SATA power plug from the PSU.

How do I install the CAB861139 and what step is often missed?

Connect the SFF-8611 end to the motherboard, the SFF-8639 end to the U.2 SSD, and plug the 15-pin SATA power lead into the PSU; the power lead is often forgotten.

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