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Green PCB card with four M.2 slots and PCIe x16 edge connector

RIITOP

RIITOP Quad M.2 NVME SSD to PCI-E 4.0 X16 Adapter Card

SKU CH-9HDX-HM478

Adds four M.2 NVME SSDs at up to 32Gbps each via a PCI-E 4.0 x16 slot with bifurcation support

  • Product typeController Card
  • Four drives at full 32 Gbps each with no speed loss
  • Hardware RAID not supported; soft RAID only in Windows 10 or third-party tools
  • Requires motherboard PCIe x16 bifurcation set to x4 x4 x4 x4 in BIOS
  • Fits M.2 2230 2242 2260 2280 M-key NVME drives; SATA B+M key not supported
  • High-power DC chip and individual LED indicators for stable power and status monitoring

Quad M.2 NVMe adapter for PCIe 4.0 x16

This adapter card connects four M.2 NVMe SSDs to a single PCIe 4.0 x16 slot. Each drive receives a full x4 link running at 32Gbps without signal sharing or speed loss. An onboard high-power DC chip provides stable power delivery for all four devices. It is built for workstations and servers that need maximum local NVMe density in one expansion slot.

Suits builders with bifurcation-capable motherboards

The card requires a motherboard that supports PCIe x16 bifurcation set to x4x4x4x4 in the BIOS. Most server boards and X299 or X399 platforms meet this requirement. The CPU must also supply enough lanes for the full x16 link. Builders whose boards cannot bifurcate the x16 slot will see only one drive detected. Users with M.2 SATA SSDs or B+M key drives cannot use this adapter.

Bifurcation support decides compatibility

The single specification that determines whether this card works is the motherboard's ability to split a PCIe 4.0 or 3.0 x16 slot into four x4 links. Without that BIOS setting, the adapter cannot present all four NVMe drives to the system.

How it compares

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

Price $26.99
Pricier than about 60% of the 1,721 comparable items (median $22.99).

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Specifications

Product
Product typeController Card

Questions about this item

What PCIe slot size and bifurcation setting does the adapter require on the motherboard?

It needs a PCIe 4.0 or 3.0 x16 slot and the BIOS must be set to x4x4x4x4 bifurcation for all four drives to be recognised.

How do I install the M.2 drives and what common step is missed?

Insert each M Key NVMe SSD (2230, 2242, 2260 or 2280) into a slot, secure with the supplied screws, then enable PCIe x16 bifurcation in BIOS; without that setting only one drive appears.

What ongoing cooling or hardware checks are needed after installation?

The card uses a high-power DC chip to deliver stable 32Gbps per drive; ensure case airflow keeps the adapter and SSDs within safe temperatures and re-check BIOS bifurcation after any firmware update.

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