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Black OCuLink SFF-8611 8x cable splitting to dual SFF-8639 U.2 connectors, 50cm

Vszerda

Vszerda OCuLink SFF-8611 8x to Dual SFF-8639 U.2 Active Cable 50cm

SKU CH-CSSY-3X91R

Connects an OCuLink SFF-8611 8x controller to two U.2 SFF-8639 drives at 16 Gbps over a 50 cm active cable

  • Rated speed16 Gbit/s
  • Connector count80
  • Connector detailsPcie
  • Connector genderMale-to-Male
  • Cable shieldingData Transfer
  • Product typeOCULINK
  • Connects OCuLink controller to dual U.2 backplanes
  • 16Gbps active cable keeps signal integrity over 50cm
  • 80-pin SFF-8611 male splits to two SFF-8639 males
  • Active latch secures connection against vibration
  • Requires free OCuLink 8x 80pin interface

Internal OCuLink 8x connection

This active cable links a host controller with an SFF-8611 8x port to two U.2 devices using SFF-8639 connectors. It suits builders adding high-speed storage to a backplane or direct-attached enclosure. The 50cm length fits typical server or workstation chassis routing.

Upgrading from single-lane or passive links

The 8-lane design aggregates four lanes per U.2 target, so each drive can use its full PCIe 4x path. The step up is worthwhile when moving from a single 4x cable or a passive assembly that cannot sustain 16Gbps per lane. Systems without a free SFF-8611 80pin header cannot use this cable.

Sustained 16Gbps throughput under load

Active circuitry maintains signal integrity across the full length during continuous read and write workloads. The locking latch prevents accidental unseating when vibration or cable movement occurs. Thermal behaviour stays consistent because the design draws power from the host side without external supply.

How it compares

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

Price $52.99
Pricier than about 90% of the 1,224 comparable items (median $26.99).

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Specifications

Product
Brand nameNFHK
Model nameNF-SF-053-0.5M
Product typeOCULINK
Product colorBlack
Performance
Rated speed16 Gbit/s
Ports & slots
Connector count80
Connector detailsPcie
Connector genderMale-to-Male
Size & build
Cable shieldingData Transfer

Questions about this item

What clearance does the 80-pin SFF-8611 connector need?

The active cable uses an 80-pin male OCuLink SFF-8611 plug with an active latch; allow room for the latch lever to swing open when seating or removing it.

Which way round do the dual SFF-8639 U.2 ends go, and what step is often missed?

Both U.2 plugs are male; insert each straight into the backplane until the active latch clicks, a step often skipped when routing the 50 cm cable in tight chassis.

When should the active cable be replaced?

Replace it if the active latch no longer holds, the 16 Gbps link drops to a lower speed, or the 50 cm cable shows kinks or connector damage.

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