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Black MCIO x8 cable splitting to two U.2 connectors with SATA power lead

LetLinkSo

LetLinkSo LLS-CB-1MC2UT-02 PCIe 4.0 MCIO x8 to 2 x SFF-8639 U.2 NVMe Cable 15Pin SATA Power 100 cm

SKU CH-9DNZ-PQG8K

Connects a PCIe 4.0 MCIO x8 host to two U.2 NVMe SSDs with integrated 15-pin SATA power over a 100 cm shielded copper cable

  • TypePCIe 4.0
  • ColorBlack
  • Length3.3ft(100 cm)
  • Cable Length3.3ft(100 cm)
  • Connector Number3
  • Connector DetailStraight Male MCIO X8 to Straight Male U.2(SFF-8639)

PCIe Gen 4.0

Length 3.3 ft / 100 cm

  • Connect two U.2 NVMe drives via a single MCIO x8 link
  • 16 GT/s per lane delivers PCIe 4.0 bandwidth
  • 15-pin SATA power connector supplies both SSDs
  • 100 cm length fits full-tower and rack builds
  • Copper conductors with shielding protect signal integrity

Connectivity Interface

This cable connects a single PCIe 4.0 MCIO x8 host port to two U.2 NVMe SSDs using SFF-8639 connectors. It includes a 15-pin SATA power lead so both drives receive power directly from the power supply. The assembly measures 100 cm end to end and uses copper conductors with shielding. Builders adding high-speed storage to a compatible backplane or server chassis will use this link.

Suitable Use Cases

The cable suits systems that expose an MCIO x8 connector and need to run two U.2 drives without a separate power adapter. It is not for builds that only provide standard SATA ports, M.2 slots, or a different MCIO lane count. Buyers whose host connector is SFF-8639 female, OCuLink, or a 4-lane MCIO variant cannot attach this cable. The integrated 15-pin power plug also requires a free SATA power header on the PSU.

Deciding Specification

The host connector is a 74-pin MCIO x8 male plug compliant with the SFF-TA-1016 specification. If the motherboard or controller card does not present this exact keyed interface the cable will not fit. The two 68-pin SFF-8639 targets accept U.2 NVMe SSDs and the link runs at 16 GT/s per lane with PCIe 3.0 backward compatibility.

Highlights

  • Connect two U.2 NVMe drives via a single MCIO x8 link
  • 16 GT/s per lane delivers PCIe 4.0 bandwidth
  • 15-pin SATA power connector supplies both SSDs
  • 100 cm length fits full-tower and rack builds
  • Copper conductors with shielding protect signal integrity

Specifications

BrandLetLinkSo
ModelLLS-CB-1MC2UT-02
TypePCIe 4.0
ColorBlack
Length3.3ft(100 cm)
Cable Length3.3ft(100 cm)
Connector Number3
Connector DetailStraight Male MCIO X8 to Straight Male U.2(SFF-8639)
Terminal GenderMale to Male
Speed16 GT/s(per lane)
Specifications3.3ft(100 cm)
ShieldingYes
ConductorCopper Conductor
FeaturesUNLOCK STORAGE POTENTIAL

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Questions about this item

Should I pick the 100 cm cable or a shorter 65 cm or 70 cm version for my chassis?

The 100 cm length gives more routing room in larger cases; the 65 cm and 70 cm Gen5 cables are shorter and use different PCIe generations, so choose based on your case size and whether you need PCIe 4.0 or 5.0.

What does the 16 GT/s per lane figure mean when the cable is installed in a server?

Each of the eight lanes runs at 16 GT/s, delivering PCIe 4.0 x8 bandwidth to the two U.2 ports so both NVMe SSDs can operate at full Gen4 speed simultaneously.

Does the SFF-8639 interface limit the SSD speed compared to a native motherboard slot?

The SFF-8639 connectors follow the SFF-TA-1016 74 pin and 68 pin standards for PCIe 4.0 x8, so they do not cap performance below what the Gen4 NVMe drives can provide.

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