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Green PCIe adapter card with gold edge connector and 50cm cable ending in U.2 plug

Vszerda

Vszerda PCI-E 3.0 4.0 x4 to SFF-8643 Adapter with U.2 Cable

SKU CH-821S-R40NG

Connects a U.2 NVMe SSD to a motherboard via PCIe 3.0 or 4.0 x4 using an SFF-8643 adapter and 50cm cable

  • Connect U.2 NVMe drives via PCIe 3.0 and 4.0 x4 lanes
  • 36-pin SFF-8643 adapter links mainboard to SFF-8639 SSD interface
  • 50 cm cable provides internal routing flexibility for compact builds
  • Windows 10 and later support enables immediate drive recognition
  • Not compatible with SAS or SATA disks ensuring correct NVMe-only deployment

Adapter and cable kit

This Vszerda kit provides a PCI-E 3.0 4.0 x4 to 36-pin SFF-8643 card adapter paired with a 50cm SFF-8643 to U.2 U2 SFF-8639 NVME PCIe SSD cable. It connects a U.2 NVMe drive to a mainboard using the SFF-8643 interface. The package includes one card and one cable.

SFF-8643 interface requirement

The adapter and cable work only with mainboards and U.2 SSDs that present a 750 PCI-E SFF-8643 interface. The link supports 4x PCIe 3.0 and PCIe 4.0 signalling. The kit does not work for SAS or SATA disks.

Builders adding U.2 NVMe via SFF-8643

This suits builders who have a mainboard with an SFF-8643 port and want to attach a U.2 NVMe SSD such as the 750 series. It is not for systems lacking that specific SFF-8643 connection, nor for anyone needing to connect SAS or SATA storage devices.

Highlights

  • Connect U.2 NVMe drives via PCIe 3.0 and 4.0 x4 lanes
  • 36-pin SFF-8643 adapter links mainboard to SFF-8639 SSD interface
  • 50 cm cable provides internal routing flexibility for compact builds
  • Windows 10 and later support enables immediate drive recognition
  • Not compatible with SAS or SATA disks ensuring correct NVMe-only deployment

Specifications

No published specifications for this item yet.

Questions about this item

What real-world bandwidth does the PCIe 3.0 x4 link provide for an NVMe drive?

The adapter runs at PCIe 3.0 x4, so an NVMe SSD sees up to the 3.0 x4 lane rate.

Does the SFF-8643 connector carry PCIe 4.0 signals or is it limited to 3.0?

The card supports both PCIe 3.0 and 4.0 x4, but the SFF-8643 link will operate at the speed negotiated between host and drive.

How much clearance does the 36-pin SFF-8643 bracket need inside the case?

The card uses a standard low-profile bracket; the included 50 cm cable routes from the bracket to the U.2 drive bay.

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