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Green rectangular PCB with gold edge connector and silver U.2 port, metal bracket at one end

SMUGDESK

SMUGDESK U.2 SFF-8639 to PCIe 4.0 x4 Adapter Card 2.5" NVMe

SKU CH-QSMV-TBFH7

Converts a 2.5″ NVMe U.2 SFF-8639 drive to a PCIe 4.0 x4 slot for high-speed server storage upgrades

  • Connect 2.5" NVMe U.2 SSDs via PCIe 4.0 x4
  • PCIe 4.0 standard delivers ultra-high bandwidth for fast transfers
  • Optimised circuit design ensures stable signal transmission
  • Standard card size with sturdy bracket fits mainstream chassis
  • Plug and play with common OS, no extra drivers needed

PCIe 4.0 x4 U.2 Adapter

This SMUGDESK adapter converts a U.2 SFF-8639 interface to a PCIe 4.0 x4 slot, enabling 2.5-inch NVMe U.2 SSD installation in compatible systems. It is designed for users who need to add high-speed U.2 storage to a platform with an available PCIe 4.0 x4 expansion slot.

Suits U.2 SSD upgrades; not for M.2

The card suits builders upgrading servers or workstations with existing 2.5-inch NVMe U.2 drives that require a PCIe 4.0 x4 connection. It is not for users who only have M.2 NVMe SSDs, nor for systems lacking a free full-height PCIe 4.0 x4 slot with bracket clearance.

PCIe 4.0 x4 interface decides fit

The single specification that determines compatibility is the PCIe 4.0 x4 slot requirement, which must match the host system's available expansion interface. The adapter delivers ultra-high bandwidth for the connected U.2 NVMe drive through this specific link.

How it compares

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

Price $20.99
Cheaper than about 57% 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

How do I pick the right U.2 SFF-8639 adapter for my 2.5" NVMe drive?

This card accepts any standard 2.5" NVMe U.2 SSD and plugs into a PCIe 4.0 x4 slot, so match your drive's physical size and interface to the slot available on your motherboard or riser.

What does PCIe 4.0 x4 actually deliver for a U.2 NVMe SSD in daily use?

The four-lane PCIe 4.0 link lets the U.2 NVMe SSD run at its full rated throughput, removing the bottleneck older slots impose on high-speed enterprise drives.

Does the SFF-8639 connector limit speed compared to a native PCIe 4.0 x4 slot?

The SFF-8639 connector passes all four PCIe 4.0 lanes directly, so the drive sees the same electrical interface and bandwidth ceiling as a native slot.

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