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Green circuit board with silver SFF-8639 connector and metal bracket

Manw

Manw PCIe to NVMe U.2 Adapter SFF-8639 x4

SKU CH-FFYW-P6PKT

Adds a 2.5" NVMe U.2 drive via x4 PCIe 3.0 with SFF-8639 connector, full-profile bracket, no cable needed, backward compatible with PCIe 2.0 and 1.0

  • Mount U.2 NVMe SSD directly on adapter for easy storage expansion
  • PCIe x4 interface delivers full NVMe speed to boost system performance
  • Full-profile bracket installs without cables to reduce clutter and simplify builds
  • Works with PCIe 3.0, 2.0 and 1.0 motherboards for broad compatibility
  • SFF-8639 connector supports 2.5 inch NVMe drives for compact high-speed storage

PCIe x4 to U.2 adapter

This PCIe 4x to SFF-8639 adapter lets you install a 2.5 inch NVMe U.2 drive directly into a standard expansion slot. It targets builders who want to add high-speed enterprise storage without using an M.2 socket. The full-profile bracket mounts the drive on the card itself, so no separate drive bay or cable is required.

Passive cooling and slot power

The adapter has no fan or active cooling; it relies on case airflow across the PCB and the installed drive. Power is drawn entirely from the PCIe x4 slot, so no auxiliary power connector is needed. Because the drive sits on the card, cable clutter inside the chassis is reduced compared with cabled U.2 solutions.

Sustained transfer depends on drive

Under continuous workloads the adapter simply passes the PCIe 3.0 x4 link to the SSD, so thermal throttling is governed by the drive's own controller and system airflow. Backward compatibility with PCIe 2.0 and 1.0 slots means the card will function, but sustained throughput will be limited by the slower bus. Builders needing multiple U.2 drives or boot support from the adapter should verify motherboard bifurcation and BIOS options.

Highlights

  • Mount U.2 NVMe SSD directly on adapter for easy storage expansion
  • PCIe x4 interface delivers full NVMe speed to boost system performance
  • Full-profile bracket installs without cables to reduce clutter and simplify builds
  • Works with PCIe 3.0, 2.0 and 1.0 motherboards for broad compatibility
  • SFF-8639 connector supports 2.5 inch NVMe drives for compact high-speed storage

Specifications

BrandManw

Questions about this item

How do I install the Manw PCIe to NVMe U.2 adapter into my motherboard?

Insert the card into a PCIe x4 slot; the full-profile bracket screws to the case. The U.2 drive plugs straight into the onboard SFF-8639 connector — no extra cable is needed.

What maintenance or replacement will the adapter need later?

The adapter has no moving parts or wear items. Only the NVMe U.2 SSD itself may require replacement when its write endurance is reached.

What speed limit appears first when the drive runs sustained workloads?

The PCIe 3.0 x4 host link caps throughput at roughly 4 GB/s, so that interface ceiling is reached before the SSD’s own limits.

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