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Green printed circuit board with gold PCIe edge connector and black U.3 SFF-8639 receptacle

Vszerda

Vszerda U.3 SFF-8639 PCIe 4.0 x4 host adapter

SKU CH-945W-HKQ1V

A PCIe 4.0 x4 host adapter adds a U.3 SFF-8639 connector for NVMe SSDs such as the PM1735 series without driver installation

  • Typexiwai
  • Length10 L x 10 W x 1 H centimeters
  • Speedpci_express_x4
  • Specificationscopper, Personal Computer, xiwai, U.3 to PCIE4X
  • Conductorcopper
  • Constructioncopper
  • Adds a U.3 SFF-8639 port for NVMe SSDs
  • PCIe 4.0 x4 link keeps full drive speed
  • Driver-free installation works on any motherboard
  • Copper conductor ensures reliable signal transfer
  • U.3 tri-mode design supports SAS, SATA and NVMe drives

U.3 SFF-8639 PCIe 4.0 x4 host adapter

This PCI Express card adds a single U.3 SFF-8639 connector to a desktop computer through a four-lane PCIe 4.0 slot. It targets builders who want to attach enterprise U.3 NVMe SSDs such as the PM1735 series directly to a motherboard without a backplane.

No drivers or speed change — pure form conversion

The adapter passes PCIe 4.0 x4 signals straight through to the U.3 port, so drive performance is unchanged and no software installation is required. It accepts only U.3 drives; U.2, SATA or SAS SSDs will not function in this connector.

Suits U.3-only SSD upgrades, not mixed-drive arrays

Choose this card when the only drive you plan to connect is a U.3 NVMe device and your board has a free PCIe 4.0 x4 slot. Builders needing U.2, SATA or SAS compatibility, or who lack an x4 lane slot, should look at a different adapter.

Highlights

  • Adds a U.3 SFF-8639 port for NVMe SSDs
  • PCIe 4.0 x4 link keeps full drive speed
  • Driver-free installation works on any motherboard
  • Copper conductor ensures reliable signal transfer
  • U.3 tri-mode design supports SAS, SATA and NVMe drives

Specifications

Brandxiwai
ModelSA-083-XY
Typexiwai
Length10 L x 10 W x 1 H centimeters
Speedpci_express_x4
Specificationscopper, Personal Computer, xiwai, U.3 to PCIE4X
Conductorcopper
Constructioncopper
Featurescopper, U.3 to PCIE4X, Personal Computer

Questions about this item

Will the SFF-8639 connector on this Vszerda adapter wear out from repeated U.3 drive swaps?

The SFF-8639 connector is rated for standard insertion cycles; U.3 hot-swap works only when system firmware supports it, so plan drive changes around that capability.

What limits sustained throughput on this PCIe 4.0 x4 host adapter?

The adapter passes PCIe 4.0 x4 lanes directly to the U.3 SSD, so the first bottleneck is the drive's own controller or the motherboard's PCIe 4.0 x4 slot bandwidth.

Does this card add heat or need extra cooling when a PM1735 SSD runs all day?

The adapter has no active components and draws negligible power; all heat comes from the U.3 SSD itself, so cooling depends on the drive and case airflow.

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