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Black Oculink 4i cable with male SFF-8611 and female SFF-8612 connectors, 39 inches long

LetLinkSo

LetLinkSo Oculink 4i Male-Female Cable 39 Inches

SKU CH-ES3D-Z6SZJ

Passive PCIe 4.0 extension cable connects SFF-8611 male to SFF-8612 female for internal NVMe or SAS storage routing at up to 64Gbps

  • Rated speed64 Gbit/s
  • Connector count2
  • Connector details42 Pin Female Oculink Sff-8612 Connector to 42 Pin Male Ocul
  • Connector genderMale-to-Female
  • Conductor typeCopper Conductor
  • Product typeHigh-Speed PCIe 4.0 Oculink 4i SFF-8611 Male to Female SFF-8

Length 3.3 ft / 100 cm

  • PCIe 4.0 x4 bandwidth up to 64Gbps for fast data transfer
  • Passive design with gold-plated contacts and EMI shielding ensures clean signal integrity
  • Extends Oculink SFF-8611 4i male to SFF-8612 4i female for internal routing
  • 39-inch length suits server, workstation and NVMe storage expansion builds
  • Copper conductor supports SAS and PCIe 4.0 signaling in compatible systems

Internal PCIe 4.0 extension cable

This passive Oculink cable bridges an SFF-8611 4i male port to an SFF-8612 4i female port inside servers, workstations or storage enclosures. It uses copper conductors with gold plated contacts and EMI shielding to maintain signal integrity across a 39 inch run. The assembly supports PCIe 4.0 x4 signalling up to 64 Gbps when paired with compatible host hardware and devices.

Replaces shorter fixed Oculink links

Builders choose this extension when the factory cable cannot reach a backplane, HBA card or GPU adapter card mounted deeper in the chassis. The jump is worth it only if the host, adapter and target device all negotiate PCIe 4.0 x4 lanes; shorter passive cables or active alternatives may be preferable where lane count or signal budget is tighter.

Fits standard 42 pin Oculink routing

The male to female orientation extends an existing SFF-8611 connection without converting protocols, freeing up layout options for NVMe drive arrays or SAS backplanes. It requires matching SFF-8611 and SFF-8612 ports on the host side and device side respectively, plus enough internal clearance for the 39 inch length and bend radius.

How it compares

Measured against everything we stock in SAS, SCSI, InfiniBand & MCIO Cables, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 55% of the 1,224 comparable items (median $26.99).

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Specifications

Product
Brand nameLetLinkSo
Product typeHigh-Speed PCIe 4.0 Oculink 4i SFF-8611 Male to Female SFF-8612 Cable
Product colorBlack
Performance
Rated speed64 Gbit/s
Ports & slots
Connector count2
Connector details42 Pin Female Oculink Sff-8612 Connector to 42 Pin Male Oculink Sff-8611 Connector
Connector genderMale-to-Female
Size & build
Cable shieldingYes
Conductor typeCopper Conductor

Other versions of this model

3 more in the same range

Questions about this item

Will the 42-pin SFF-8611 male and SFF-8612 female ends clear a standard backplane bracket?

The cable uses 42-pin SFF-8611 male and SFF-8612 female Oculink 4i connectors; verify your chassis bracket cut-out and cable-routing space against the 39-inch length before fitting.

Do I need to install a driver or configure the BIOS for this passive PCIe 4.0 extension?

No driver or BIOS change is required; the passive copper cable with gold-plated contacts and EMI shielding carries PCIe 4.0 x4 signals up to 64Gbps once both SFF-8611 and SFF-8612 ends are seated firmly.

When should I replace this extension cable in a server running NVMe storage?

Replace the cable if link errors appear, bandwidth drops below PCIe 4.0 x4 rates, or the gold-plated contacts show wear after repeated mating cycles in the NVMe expansion chassis.

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