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Black 50 cm cable with SFF-8639 to SFF-8643 connectors

Vszerda

Vszerda SF-093-0.5M-NG SFF-8639 to SFF-8643 4i internal power cable 50cm

SKU CH-6HAS-PFRDY

Connects an SFF-8639 U.2 NVME SSD to an SFF-8643 4i host port at PCIe 4.0 speeds

  • Cable length50 cm
  • Connector detailsSFF-8639
  • Cable shieldingHigh Speed PCI-E 4.0
  • Product typeSFF-8639
  • Product colorBlack
  • Overall lengthCentimeters 50
  • Connects SFF-8639 SSD to SFF-8643 4i host for direct NVME PCIe link
  • Supports PCIe 5.0, 4.0 and 3.0 x4 lanes for broad mainboard compatibility
  • 50 cm cable length fits compact SFF-8639 to SFF-8643 internal routing
  • PCI-E 4.0 shielding delivers 64 Gbps throughput without signal degradation
  • Driver-free transparency lets OS recognise NVME SSD immediately on Windows 7 and Server 2008 R2

Vszerda SFF-8639 to SFF-8643 4i cable

This 50 cm internal power cable converts a SFF-8639 U.2 device connector to a SFF-8643 4i host port. It is built for PCIe 3.0, 4.0 and 5.0 x4 links and meets the 64 Gbps specification. The assembly is transparent to the operating system and requires no software drivers. It targets builders adding NVME storage to a mainboard with a Mini SAS HD interface.

Replaces direct U.2 backplane wiring

The cable lets you connect a U.2 NVME SSD such as an Intel 750, P3600 or P3700 to a mainboard SFF-8643 4i slot without a drive cage. The jump is worth it when the board lacks a native U.2 port but exposes a Mini SAS HD connector for PCIe x4. It does not work with SAS RAID controllers and hot-plugging is not supported.

Limited to PCIe x4 electrical width

The SFF-8643 4i interface carries four PCIe lanes, so the link cannot exceed x4 bandwidth. The 50 cm length suits typical chassis routing but offers no slack for distant drive bays. Windows 7 and Server 2008 R2 need a native NVM Express driver update before the drive is recognised. The cable alone is supplied; no adapter or card is included.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 71% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameNGFF
Model nameSF-093-0.5M-NG
Product typeSFF-8639
Product colorBlack
Ports & slots
Connector detailsSFF-8639
Size & build
Overall lengthCentimeters 50
Cable length50 cm
Cable shieldingHigh Speed PCI-E 4.0

Questions about this item

What clearance does the 50 cm SFF-8639 to SFF-8643 4i cable need inside the chassis?

The cable is 50 cm long and uses a black SFF-8639 plug on one end and an SFF-8643 4i plug on the other; allow enough space for the bend radius of a shielded PCIe 4.0 cable and for the connectors to seat fully without strain.

Which orientation do the SFF-8639 and SFF-8643 4i connectors require during installation?

Both connectors are keyed; align the notch on each plug with the socket before pressing in — forcing the wrong orientation can damage the pins, and the cable does not support hot-plugging.

When should the cable be inspected or replaced in a PCIe 3.0 x4 or 4.0 x4 NVME link?

Check the shielding and connector latches whenever the system is opened; replace the cable if the SFF-8639 or SFF-8643 4i contacts show wear, the jacket is kinked, or the link drops below the 64 Gbps PCIe 4.0 spec.

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