Vszerda LLS-CB-1MC2UT-01 MCIO x8 to 2×SFF-8639 U.2 NVMe cable 40 cm

What this cable connects

The Vszerda LLS-CB-1MC2UT-01 is a PCIe 5.0 MCIO x8 to dual SFF-8639 U.2 NVMe cable with integrated 15-pin SATA power. It links one 74-pin SFF-TA-1016 MCIO host connector to two 68-pin U.2 drive ports, supporting 32 GT/s across eight lanes. The 40 cm black assembly is built to SAS 4.0 and PCIe Gen5 specifications and remains backward compatible with PCIe 4.0 systems. It targets builders adding high-speed U.2 storage to a compatible MCIO-equipped motherboard or controller.

Build integration and slot usage

The cable consumes a single MCIO x8 port on the host side while freeing two U.2 bays for NVMe SSDs, removing the need for separate power adapters thanks to the included 15-pin SATA power lead. Male-to-male terminal gender means both ends plug directly into matching female receptacles without gender changers. Backward compatibility with PCIe 4.0 lets the same cable serve current and previous-generation platforms, though the host must provide an MCIO x8 interface and a SATA power connector from the PSU.

Signal integrity and power delivery

Designed to SAS 4.0 and PCIe Gen5 standards, the 40 cm length helps maintain signal quality at 32 GT/s while the integrated 15-pin SATA power cable delivers stable power to both U.2 NVMe SSDs. The black jacket and 74-pin to dual 68-pin wiring follow SFF-TA-1016 and SFF-8639 pinouts for reliable enterprise-grade operation. No active cooling or additional signal conditioning is required on the cable itself.