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Black braided cable with SFF-8643, SFF-8639 and SATA power connectors, 0.5 m long

EN-Labs

EN-Labs SFF-8643 to SFF-8639 NVMe SAS Adapter Cable 0.5m

SKU CH-75YN-BEMTM

Connects a U.2 NVMe SSD to a 12G Mini SAS HD port with integrated SATA power over a .5m cable

  • TypeAdapter
  • Length0.5 Meter
  • Connector Number3
  • Specifications- Internal Connector A: 1 x 36 pin HD Mini-SAS SFF-8643 male
  • FeaturesInternal HD Mini SAS SFF-8643 to U.2 SFF-8639 with SATA Powe

Length 0.5m

  • Connect U.2 NVMe drives via 12G HD Mini SAS SFF-8643
  • Integrated 15-pin SATA power connector supplies 3.3V and 12V to the SSD
  • 5 metre length fits compact builds and 2.5" drive bays
  • Compatible with Intel SSD 750, P3600 and P3700 series U.2 drives
  • Braided sleeve jacket with cloth-tape strain relief on both SFF-8643 and SFF-8639 ends

Connect U.2 NVMe to 12G Mini-SAS

This 0.5 metre adapter cable links a U.2 NVMe SSD with an SFF-8639 port to a host card or motherboard header using an SFF-8643 Mini-SAS connector. It targets builders adding high-speed NVMe storage to platforms lacking a native U.2 socket. The cable also includes a 15-pin SATA power receptacle to supply the drive. It does not suit systems without a free Mini-SAS port or a spare SATA power lead.

Passive design draws no extra power

The assembly uses a braided sleeve and cloth-tape strain relief on both data connectors. No active circuitry sits on the cable, so it adds no heat or noise beyond the drive and host card themselves. Power for the SSD passes straight through from the SATA connector to the SFF-8639 plug. The 50 cm length keeps routing tidy inside compact chassis.

SATA power lead enables drive operation

The bundled 15-pin SATA receptacle is mandatory; the U.2 drive cannot start without 3.3 V and 12 V supplied from the power supply. No software, drivers or mounting hardware are included. An M.2 NVMe SSD would need a separate M.2-to-U.2 adapter, which is not part of this package.

Highlights

  • Connect U.2 NVMe drives via 12G HD Mini SAS SFF-8643
  • Integrated 15-pin SATA power connector supplies 3.3V and 12V to the SSD
  • 5 metre length fits compact builds and 2.5" drive bays
  • Compatible with Intel SSD 750, P3600 and P3700 series U.2 drives
  • Braided sleeve jacket with cloth-tape strain relief on both SFF-8643 and SFF-8639 ends

Specifications

TypeAdapter
Length0.5 Meter
Connector Number3
Specifications- Internal Connector A: 1 x 36 pin HD Mini-SAS SFF-8643 male with latch - Internal Connector B: 1 x 68 pin U.2 SFF-8639 male - Power Connector : 15 Pin SATA receptacle
FeaturesInternal HD Mini SAS SFF-8643 to U.2 SFF-8639 with SATA Power Cable is an essential tool for building or upgrading a computer with a U.2 NVMe SSD. Add the NVMe capability of performing 5x faster than a SATA SSD even when a U.2 connection is not available on the motherboard. Internal 12G HD mini SAS cable is specifically designed to connect from a PCIe card for RAID or other storage to a high performance NVMe SSD with a U.2 SFF-8639 port; SFF 8639 cable power-saving and heat dissipation solution for mounting storage in a 2.5" form factor instead of using a chipset on the motherboard D

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Questions about this item

How do I connect the SFF-8643 end to my RAID card and the U.2 SFF-8639 end to my NVMe SSD?

Plug the 36-pin HD Mini-SAS SFF-8643 male connector into the RAID or HBA card, attach the 68-pin U.2 SFF-8639 male connector to the U.2 NVMe SSD, then connect the 15-pin SATA power receptacle to a PSU SATA cable; the step often missed is forgetting the SATA power link, which leaves the drive unpowered.

What parts of this adapter cable might wear out and need replacing first?

The braided-sleeve jacket and cloth-tape strain relief on both the SFF-8643 and SFF-8639 connectors protect the 0.5 m cable, but repeated mating cycles can fatigue the latch on the 36-pin plug and the SATA power receptacle, so those ends are the likeliest items to replace.

At what point does the 12 Gb/s SAS link become the bottleneck during sustained NVMe SSD transfers?

The adapter carries a PCIe 3.0 x4 (four-lane) connection over the 12 Gb/s Mini-SAS HD interface, so the 12 Gb/s electrical limit is reached before the drive’s native NVMe throughput, capping sustained sequential performance at the link rate.

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