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Black flat cable with SFF8654 4i to SFF8643 connectors .5M

SMUGDESK

SMUGDESK MCIO Slimline SFF8654 4i to HD SFF8643 Cable .5M

SKU CH-4P1M-6MSAH

Connects MCIO Slimline SFF8654 4i to Mini SAS HD SFF8643 with 85 Ohm impedance for stable 12Gbps SAS and NVMe data transfer in dense servers

  • Gen5-ready link connects MCIO Slimline SFF8654 4i to Mini SAS HD SFF8643 for cross-interface server connectivity
  • Controlled 85 ohm impedance preserves signal integrity and minimises crosstalk at high speed
  • Stable 12 Gbps bandwidth supports enterprise storage and NVMe workloads reliably
  • Flat black connector profile saves space and simplifies routing inside dense chassis
  • Short .5 m length keeps cable runs tidy in compact high-density backplane wiring

Compact Server Cable for High-Density Builds

This .5 metre cable links an MCIO Slimline SFF8654 4i port to a Mini SAS HD SFF8643 interface. It targets administrators wiring enterprise storage, RAID controllers or NVMe backplanes inside space-constrained chassis. The short length keeps internal routing tidy and avoids airflow obstruction in dense 1U or 2U systems.

12 Gbps Ceiling and 85 Ohm Discipline

The assembly is rated for 12 Gbps throughput and manufactured to a strict 85 ohm controlled impedance. That ceiling matches the practical limit of the SAS-3 / PCIe 4.0 signalling the connectors carry; faster protocols would require different cabling. The impedance control suppresses crosstalk and reflection so the link remains stable at the rated speed.

Flat Connectors Simplify Tight Routing

Black flat-style connectors reduce the vertical profile at each end, letting the cable slide between closely spaced drive cages and board headers. The slim SFF8654 plug and the SFF8643 receptacle both latch securely, so vibration in rack-mounted gear does not unseat the link. The half-metre reach suits adjacent backplane-to-controller runs but will not span full-depth chassis.

How it compares

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

Price $17.99
Cheaper than about 73% of the 1,224 comparable items (median $26.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Which connector variant should I choose for my MCIO Slimline SFF8654 4i port?

This cable uses a fixed MCIO Slimline SFF8654 4i to HD SFF8643 layout; select it when your server or backplane has that exact 4i receptacle.

What does the 12 Gbps rating mean once the cable is installed in a server?

It indicates the maximum stable throughput the 85 ohm controlled-impedance link can sustain between a RAID controller or NVMe backplane and the attached drives.

What interface standard does the HD SFF8643 end conform to, and what speed does that cap in practice?

The HD SFF8643 connector follows the SAS 12 Gbps electrical specification, so the practical ceiling is the 12 Gbps lane rate supported by the controller and drives.

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