Connects Mini SAS HD (SFF-8644) hosts to U. 2 NVMe SSDs (SFF-8639), compatible with both 12Gbps SAS 3.0 and PCIe 4.0 x4 protocols for hybrid storage solutions.. Impedance=85 Ohms. Wire size (AWG) =30.. PCIe 4.0, the NVMe speed up to 16Gbps.. Built-in 15-pin SATA power connector eliminates external PSU requirements, simplifying installation in servers/workstations.. Works with Dell/HP/Lenovo servers and Intel/Samsung/WD U. 2 SSDs, certified for Windows/Linux/ESXi systems.