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Flat 50 cm cable with a slim SFF-8654 plug on one end and a wider U.2 SFF-8639 connector on the other, black PVC jacket

Vszerda

Vszerda SF-104-0.5M SFF-8654 to SFF-8639 NVME cable

SKU CH-1GZY-XN8CR

Connects a U.2 NVME SSD to a Slimline SFF-8654 controller at 24 Gbps with included SATA power

  • TypeSAS
  • Length1
  • Connector DetailSas
  • Terminal GenderMale-to-Female
  • Speed24 gigabits_per_second
  • ConductorCopper
  • Connect U.2 NVME drives via SFF-8654 4i controller
  • 24 Gbps SAS and 8 GT/s PCIe per channel data speed
  • 50 cm length suits compact internal builds
  • Copper conductor ensures reliable signal integrity
  • PCI-E only — not compatible with SAS RAID cards

SFF-8654 to SFF-8639 NVMe cable

This .5 metre cable connects a U.2 SFF-8639 NVMe SSD to a motherboard or controller with a Slimline SFF-8654 4i connector. It carries PCIe signals at 8GT/s per channel and includes a SATA power lead for the drive. The copper conductors support 24Gbps SAS speeds. The cable only supports PCIe and will not work with a SAS RAID card.

Replaces custom adapter assemblies

The single assembly replaces a separate SFF-8654 cable plus a SATA power cable, reducing internal clutter. The jump is worth it when adding a U.2 drive to a board that only exposes a Slimline SFF-8654 4i port, such as the Intel SSD 750 M.2 interface. It is not for builders who need SAS RAID connectivity or who require a longer reach than .5 metre.

50cm length with PCIe 4.0 headroom

The 50cm length comfortably handles PCIe 4.0 x4 traffic to drives such as the Intel P3600 or P3700 series. Headroom runs out if the routing path exceeds the fixed .5 metre length or if the target controller uses a SAS RAID interface, which the cable explicitly does not support.

Highlights

  • Connect U.2 NVME drives via SFF-8654 4i controller
  • 24 Gbps SAS and 8 GT/s PCIe per channel data speed
  • 50 cm length suits compact internal builds
  • Copper conductor ensures reliable signal integrity
  • PCI-E only — not compatible with SAS RAID cards

Specifications

Brandchenyang
ModelSF-104-0.5M
TypeSAS
Length1
Connector DetailSas
Terminal GenderMale-to-Female
Speed24 gigabits_per_second
ConductorCopper
FeaturesData Transfer

Questions about this item

How much clearance does the 50 cm cable need between the SFF-8654 and SFF-8639 connectors?

The cable is 50 cm long, so allow at least that distance plus room for the SFF-8654 4i plug and SFF-8639 port to seat fully without sharp bends.

Which end plugs in first when installing the SFF-8654 to SFF-8639 cable, and what is the common mistake?

Connect the SFF-8654 4i end to the motherboard Slimline port first, then attach the SFF-8639 end to the U.2 drive; the frequent error is forgetting the separate SATA power lead that the drive requires.

When should the SFF-8654 to SFF-8639 cable itself be replaced?

Replace the cable if the SFF-8654 or SFF-8639 connectors show bent pins, cracked housings, or if data errors appear at the rated 24 Gbps SAS or 8 GT/s PCIe speeds.

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