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Black 100 cm cable with SFF-8611 and SFF-8639 connectors and power lead

SMUGDESK

SMUGDESK OCuLink 4X to U.2 NVMe Cable SFF-8611 to SFF-8639 with Power 100cm

SKU CH-CYTT-BS4DS

Connects an OCuLink 4X port to a U.2 NVMe drive with integrated power over a 100cm cable supporting PCIe 4.0 and 3.0

  • PCIe 4.0 speed with PCIe 3.0 backward compatibility
  • SFF-8611 to SFF-8639 conversion with integrated power connector
  • 100cm length enables flexible routing in servers and workstations
  • Direct U.2 NVMe SSD connection for storage expansion
  • Robust build provides stable signal and long service life

OCuLink 4X to U.2 NVMe Cable 100cm

This 100cm cable converts an SFF-8611 OCuLink 4X port to an SFF-8639 U.2 interface with integrated power delivery. It supports PCIe 4.0 speeds while remaining backward compatible with PCIe 3.0 devices. The assembly is designed for reliable signal integrity in server and workstation storage expansions. Builders can route the length to suit internal chassis layouts.

Suits installers adding U.2 NVMe drives to OCuLink

The integrated power connector removes the need for a separate drive power cable during installation. Administrators expanding storage arrays in 2U or 4U servers will appreciate the flexible reach. Buyers whose host systems lack an OCuLink 4X port cannot use this adapter. Installers requiring a shorter or longer fixed length must select a different cable.

PCIe 4.0 support over SFF-8611 to SFF-8639

The link operates at PCIe 4.0 rates and falls back to PCIe 3.0 when connected to older endpoints. This single specification determines whether the cable matches the host controller and drive capabilities. Verify the host provides an SFF-8611 receptacle and the drive uses an SFF-8639 connector before purchase.

How it compares

Measured against everything we stock in SATA, IDE & M.2 Drive Adapters, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 67% of the 1,721 comparable items (median $22.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I install the SMUGDESK OCuLink 4X to U.2 NVMe cable and what step is commonly missed?

Plug the SFF-8611 end into the OCuLink port, connect the SFF-8639 end to the U.2 NVMe SSD, then attach the built-in power connector; the step often missed is forgetting to connect the separate power lead before booting.

What maintenance or replacement will the SMUGDESK OCuLink 4X to U.2 NVMe cable need later?

The cable itself has no moving parts or consumable items, so it requires no scheduled maintenance; replacement is only necessary if the connectors become physically damaged or signal integrity degrades after extended use.

What limit appears first on the SMUGDESK OCuLink 4X to U.2 NVMe cable under sustained heavy I/O?

The 100 cm length and PCIe 4.0 signalling set the practical ceiling; signal attenuation over the longer run typically becomes the bottleneck before the SSD reaches its own thermal or throughput limits.

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