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Green printed circuit board with two silver SFF-8643 connectors and a gold PCIe x8 edge connector

Vszerda

Vszerda SF02 2-Port SFF-8643 to PCIe 4.0 x8 Adapter Card

SKU CH-J217-9HX8E

Converts one PCIe 4.0 x8 slot into two SFF-8643 ports for U.2 SSD connections

  • Rated speedPci express x8
  • Product typePci express x8
  • Product colorWithout PCIe Bifurcation
  • Overall length2-port
  • Details2-port, pci express x8, GLOTRENDS
  • Key featuresPci express x8, 2-port
  • Converts one PCIe 4.0 x8 slot into two SFF-8643 ports
  • Backwards compatible with PCIe 3.0, 2.0 and 1.0 systems
  • Each SFF-8643 port delivers up to PCIe 4.0 x4 bandwidth
  • Requires motherboard PCIe bifurcation support for both ports to function
  • Works with Windows 11, 10, 8, Linux and macOS without drivers

Two-Port SFF-8643 Adapter for PCIe 4.0 x8

This Vszerda SF02 card converts a single PCIe 4.0 x8 slot into two SFF-8643 Mini-SAS HD ports. It enables the connection of up to two U.2 SSDs to a desktop PC or server that lacks native U.2 support. The adapter is backward compatible with PCIe 3.0, 2.0 and 1.0 slots. A separate SFF-8643 to SFF-8639 cable is required for each drive.

Suits systems with PCIe bifurcation.

The card requires a motherboard that supports PCIe bifurcation to address both ports. Without bifurcation, only the first port will be recognised by the system. It is intended for builders adding U.2 storage to workstations or servers running Windows 11, 10, 8, Linux or macOS. Buyers who need more than two U.2 connections or whose platform cannot split an x8 lane should look at other solutions.

Check slot width, bifurcation support

Verify that your motherboard has a free PCIe 4.0 x8 slot and that its BIOS or UEFI offers bifurcation options such as x4+x4. Confirm the operating system is among the supported versions for plug-and-play operation. Remember to order one SFF-8643 to SFF-8639 cable for each U.2 SSD you plan to install.

How it compares

Measured against everything we stock in SAS, SCSI, InfiniBand & MCIO Cables, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 86% of the 1,224 comparable items (median $26.99).

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Specifications

Product
Brand nameGLOTRENDS, glotrends
Product typePci express x8
Product colorWithout PCIe Bifurcation
Performance
Rated speedPci express x8
Size & build
Overall length2-port

Questions about this item

Does this adapter need a motherboard with PCIe bifurcation to use both SFF-8643 ports?

Yes, the card does not perform bifurcation itself; the motherboard must split the PCIe 4.0 x8 link so each port receives a PCIe 4.0 x4 connection, otherwise only the first port is detected.

Can I connect U.2 drives to this card using my existing SFF-8643 to SFF-8639 cables?

The adapter provides two SFF-8643 ports, so standard SFF-8643 to SFF-8639 cables will carry the PCIe 4.0 x4 links to U.2 SSDs; the cables are sold separately.

How can I verify both ports are running at PCIe 4.0 x4 after installation?

In the OS disk utility each U.2 SSD should appear as a separate PCIe 4.0 x4 device and achieve sequential throughput consistent with a four-lane Gen 4 link.

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