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Green PCB adapter card with full-height bracket and two silver 74-pin SlimSAS connectors

SMUGDESK

SMUGDESK PCIe 4.0 x16 to Dual SlimSAS SFF-8654 8i Adapter Card

SKU CH-30SZ-2D3WX

Converts a PCIe 4.0 x16 slot into two independent SlimSAS SFF-8654 8i ports for NVMe, SAS and SATA storage expansion

  • Converts one PCIe 4.0 x16 slot into two SlimSAS SFF-8654 8i ports
  • Each port runs at x8 lanes for full 16GT/s bandwidth
  • Backward compatible with PCIe 3.0 and 2.0 systems
  • Supports bifurcation x16 to 2×x8 or 4×x4 for NVMe SSDs
  • Plug-and-play on Windows Linux VMware with no driver required

PCIe 4.0 x16 to Dual SlimSAS Adapter

This adapter converts a single PCIe 4.0 x16 slot into two independent SlimSAS SFF-8654 8i ports. Each port runs at x8 lanes for direct connection to U.2 NVMe SSDs or SAS and SATA storage devices. It targets server and workstation builders who need high-density storage expansion without using multiple slots.

Upgrade from single-port or PCIe 3.0 cards

The card delivers full PCIe 4.0 bandwidth up to 256Gbps at 16GT/s per lane while remaining backward compatible with PCIe 3.0 and 2.0 systems. Bifurcation support allows x16 to split into 2×x8 or 4×x4 configurations. The jump is worth it when your platform supports bifurcation and you need more than one high-speed NVMe device per slot.

Verify slot, bracket and bifurcation support

Confirm your motherboard or riser provides a mechanical x16 slot with electrical x16 wiring and that the BIOS or UEFI exposes bifurcation settings for 2×x8 or 4×x4 operation. The standard bracket is full-height; a low-profile bracket may be required for compact chassis. No driver installation is needed for Windows, Linux or VMware environments.

How it compares

Measured against everything we stock in Interface & Card Adapters, at today’s prices. Recalculated every night.

Price $43.99
Pricier than about 85% of the 354 comparable items (median $21.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does this adapter require a full-height PCIe x16 slot or can it fit a low-profile bracket?

The card ships with a standard full-height bracket and a low-profile bracket is available as an option for smaller chassis.

What BIOS setting must be enabled for the two SlimSAS ports to appear as separate x8 links?

Enable PCIe bifurcation in the motherboard firmware and select the x16 to 2×x8 mode so each port receives eight lanes.

When should the optional signal retiming feature be activated for long cable runs?

Turn on retiming in the adapter firmware when cable length approaches the PCIe 4.0 spec limit to maintain 16 GT/s per lane stability.

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