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Green circuit board with two M.2 slots and a PCIe x16 connector

SMUGDESK

SMUGDESK PCIe 4.0 X16 to Dual M.2 NVMe + PCIe X16 (x8) Adapter

SKU CH-EG2D-Q0RJW

Converts a PCIe 4.0 x16 slot into two M.2 NVMe bays plus an extra x8 PCIe x16 port, supporting 2230/2242/2260/2280/22110 SSDs and requiring motherboard bifurcation

  • Adds two M.2 NVMe slots from one PCIe 4.0 X16 slot
  • Keeps an extra PCIe X16 x8 port for other expansion cards
  • Fits 2230, 2242, 2260, 2280 and 22110 NVMe drives
  • Requires motherboard PCIe bifurcation for full operation
  • High-speed PCIe 4.0 links for fast storage throughput

PCIe 4.0 X16 to Dual M.2 NVMe Adapter

This adapter converts a single PCIe 4.0 X16 slot into two M.2 NVMe bays and an additional PCIe X16 port operating at x8 signal. It targets desktop and workstation users who need extra high-speed storage alongside another expansion card. Builders without motherboard bifurcation support cannot use this product.

Bifurcation Requirement and Signal Limits

The card requires motherboard PCIe bifurcation to activate all ports simultaneously. Without this function, the M.2 slots and the extra PCIe port will not operate as intended. The secondary PCIe X16 slot delivers x8 electrical bandwidth, limiting throughput for devices installed there.

Supported M.2 NVMe Form Factors

Compatible M.2 NVMe SSDs include 2230, 2242, 2260, 2280 and 22110 lengths. This range covers most mainstream drive sizes for flexible storage expansion. Drives using other interfaces or unsupported lengths will not fit or function.

How it compares

Measured against everything we stock in SATA, IDE & M.2 Drive Adapters, at today’s prices. Recalculated every night.

Price $31.99
Pricier than about 68% of the 1,721 comparable items (median $22.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Which M.2 NVMe SSD sizes does this adapter support?

The card accepts 2230, 2242, 2260, 2280 and 22110 M.2 NVMe drives, so choose the length that matches your SSD and available case space.

What bandwidth do the two M.2 slots and the extra PCIe slot share when installed in a PCIe 4.0 x16 slot?

The adapter splits the x16 link into two NVMe x4 lanes and one PCIe x8 lane, giving each M.2 drive up to PCIe 4.0 x4 speed and the extra slot x8 speed.

Why is PCIe bifurcation required for this card to work?

The motherboard must divide the single x16 slot into multiple independent links so the two M.2 NVMe ports and the extra x8 slot can operate simultaneously.

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