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Short blue cable with SFF8643 plug splitting to two SFF8639 connectors and a 15pin power tail

Fervit

Fervit .5m Mini SAS HD 8643 4i to Dual SAS 8639 SATA Cable with 15Pin Power 12Gbps 32AWG

SKU CH-QPT1-5C84C

Converts a single Mini SAS HD 8643 4i port to dual SAS 8639 U.2/SAS drive ports with integrated 15-pin SATA power for 12Gbps storage expansion

  • Connects one Mini SAS HD port to two SAS drives using SFF8643 4i to dual SFF8639 fanout
  • Delivers 12Gbps SAS 3.0 bandwidth for U.2 NVMe SSDs and enterprise SAS drives
  • Integrated SATA 15pin power feeds drives directly without extra cables
  • Premium 32AWG pure copper wire reduces signal loss and crosstalk
  • Compact .5m length fits tidy routing in 2U and 4U rackmount servers

Storage expansion cable

This fanout cable connects a single SFF8643 4i Mini SAS HD host port to two SFF8639 U.2 or SAS drive ports, enabling multidrive storage expansion inside servers. It suits administrators adding U.2 NVMe SSDs or enterprise SAS hard drives to backplanes with limited host connectors.

Interface bandwidth limit

The assembly supports SAS 3.0 signalling at 12Gbps, so aggregate throughput cannot exceed that rate across both attached drives. Each SFF8639 connector carries the same electrical standard, and the integrated SATA 15pin power feed is restricted to the voltage and current limits of a standard SATA power header.

Installation and common issues

The .5m length and 32AWG pure copper construction allow tidy shortrange routing in 2U or 4U rackmount chassis, but the fixed reach may fall short in taller enclosures. Builders must verify that the host port is SFF8643 4i and that drives use SFF8639; mismatched mini SAS generations or U.3-only bays will not mate correctly.

How it compares

Measured against everything we stock in SATA & eSATA Drive Cables, at today’s prices. Recalculated every night.

Price $26.99
Pricier than about 85% of the 1,954 comparable items (median $13.99).

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Specifications

Product
Brand nameFervit

Questions about this item

Should I pick the .5m length or a longer cable for my server?

The .5m length is designed for short-range routing inside 2U or 4U rackmount servers and storage backplanes; choose a longer cable only if the host port and drive bays are farther apart.

What does the 12Gbps rating mean when the cable is installed?

It supports stable SAS 3.0 data transfer at up to 12Gbps per lane, enabling full bandwidth for U.2 NVMe SSDs and enterprise SAS hard drives connected through the dual SFF8639 ports.

Does the SFF8643 4i interface limit the drives I can attach?

The single SFF8643 4i host port fans out to two SFF8639 connectors, so you can attach two U.2 NVMe SSDs or SAS drives simultaneously, each running at SAS 3.0 speeds.

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