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Green PCB with SFF-8643 port and PCIe x16 gold fingers

eshinreal

eshinreal SFF-8643 8i to PCIe 3.0 x16 Adapter

SKU CH-MQ3S-6RSN4

Connects 8-lane SFF-8643 devices to a PCIe 3.0 x16 slot for 8GB/s storage expansion

  • Product typeController Card
  • Converts 8-lane SFF-8643 to PCIe 3.0 x16 slot
  • Delivers PCIe 3.0 x8 bandwidth up to 8GB/s throughput
  • Connects NVMe, SAS or SATA drives via SFF-8639 breakout
  • Industrial PCB with gold-plated connectors for signal integrity
  • Operates reliably from 0°C to 70°C environment

What the adapter does

The eshinreal SFF-8643 8i adapter converts an 8-lane Mini-SAS HD connection to a PCIe 3.0 x16 mechanical slot. It delivers PCIe 3.0 x8 electrical bandwidth up to 8GB/s for storage arrays or specialty PCIe devices. IT professionals and system integrators use it for high-speed storage expansion in servers and workstations.

What to verify before ordering

Confirm your host system provides a PCIe 3.0 x8 or x16 slot with sufficient lane allocation for the adapter. Ensure the target devices use SFF-8643 connectivity and match the supported SAS, NVMe or SATA protocols. Check that any required breakout cables or interposers for U.2 NVMe or SATA drives are available separately.

Thermals, noise and power

The adapter is a passive controller card with no onboard fan, so it adds no audible noise to the chassis. Its industrial-grade PCB with 2oz copper layers and gold-plated connectors operates within a 0°C to 70°C range. Power draw depends entirely on the attached storage or PCIe devices rather than the adapter itself.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 60% of the 891 comparable items (median $30.99).

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Specifications

Product
Product typeController Card

Questions about this item

Does the adapter include the SFF-8643 to U.2 NVMe breakout cables or must they be purchased separately?

The adapter provides the SFF-8643 8i port only; breakout cables for U.2 NVMe drives (SFF-8639) or SAS/SATA devices are sold separately.

The listing mentions PCIe 3.0 x16 slot but x8 electrical — which bandwidth should I plan for?

The card fits a full-size x16 slot but operates at PCIe 3.0 x8 electrical, delivering up to 8 GB/s bidirectional throughput.

Will this card work inside a standard desktop tower or only in a server chassis?

It fits any PCIe 3.0 x16 slot, but the SFF-8643 connector is designed for external cabling to drive bays or backplanes common in server and workstation builds.

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