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Green circuit board with four U.2 connectors and a PCIe x16 edge connector

GLOTRENDS

GLOTRENDS PU41 Quad U.2 SSD to PCIe 4.0 X16 Adapter

SKU CH-HN4W-SQZ0G MPN PU41

Connects four U.2 NVMe drives via PCIe 4.0 X16, requiring motherboard bifurcation support for full multi-drive access

  • TypeU.2 to PCI Express
  • Add four U.2 SSDs via one PCIe 4.0 X16 slot
  • Achieve 32 GBbps aggregate bandwidth on PCIe 4.0 X16
  • ASM1184E chip enables simultaneous four-drive access
  • Configure soft RAID on Windows or Linux platforms
  • Motherboard PCIe bifurcation required for full four-drive operation

Quad U.2 Adapter for PCIe 4.0 X16

The GLOTRENDS PU41 connects four U.2 SSDs to a single PCIe 4.0 X16 slot using an ASM1184E chip. It delivers up to 64Gbps aggregate bandwidth when paired with a PCIe 4.0 platform. The card requires a motherboard that supports PCIe bifurcation in BIOS to split the X16 link into X4X4X4X4 or Hyper M.2 X16 mode.

Builders with bifurcation-ready boards.

This adapter suits Windows and Linux users whose motherboard firmware can configure X4X4X4X4 lane splitting. It also supports soft RAID and Intel VROC with a separate license. Systems without bifurcation support, Mac Pro 5.1, or Windows 7 will only recognise one drive, making the card unsuitable for those platforms.

Four drives at X4 speeds; limited by platform

Each U.2 port runs at PCIe 4.0 X4 for 16Gbps per drive when the CPU, slot, and SSDs are all PCIe 4.0. On PCIe 3.0 X16 the total drops to 32Gbps. If the BIOS is set to X8X4X4 only three drives are visible. The adapter itself cannot split lanes, so headroom ends where motherboard bifurcation ends.

Highlights

  • Add four U.2 SSDs via one PCIe 4.0 X16 slot
  • Achieve 32 GBbps aggregate bandwidth on PCIe 4.0 X16
  • ASM1184E chip enables simultaneous four-drive access
  • Configure soft RAID on Windows or Linux platforms
  • Motherboard PCIe bifurcation required for full four-drive operation

Specifications

TypeU.2 to PCI Express

Questions about this item

Does my motherboard need PCIe bifurcation support to use all four U.2 ports on the PU41?

Yes, the adapter itself cannot split the X16 link, so the motherboard must support bifurcation. Without it, only the NVMe-1 port will recognise a drive.

Will the PU41 work with an older PCIe 3.0 X16 slot?

It will function, but the total bandwidth drops to roughly 16 GB/s instead of the 32 GB/s available on a PCIe 4.0 X16 slot. Each U.2 SSD then runs at PCIe 3.0 X4 speeds.

How can I confirm all four U.2 SSDs are detected after installing the PU41?

Enter the BIOS or UEFI and verify that the PCIe slot is configured to X4X4X4X4 mode; all four drives should then appear in the device list or NVMe management screen.

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