1.12GB/s Mini SAS HD 4i plug (SFF8643 36P) to U.2 plug (SFF8639 68P) cable with power Data transfer rate PCI Express 2.0 is up to 2 GB/sec; PCI Express 3.0 is up to 4 GB/sec. PCIe Gen 3 4 lanes 4 GB/s X 4 16 GB/s Conductor and power Conductor diameter: 32 AWG data wire; 24 AWG power wire Connectors Connector 1: 1 x SFF8643 male Connector 2: 1 x U.2 SFF8639 male 1 x 15pin female connector Key benefits and features Interface bridging: Connects a Mini SAS HD 4i device with an SFF8643 36P interface to a U.2 device with an SFF8639 68P interface, enabling crosscompatibility between SAS HD and U.2 storage systems. Power delivery: Includes a 15pin female connector for additional power to support drive operation and stability. Performance alignment: Documentation reflects PCIe transfer capabilities across PCIe 2.0 and 3.0 generations, with a Gen 3 4lane path specified as 16 GB/s according to the original specification. Build materials: Uses 32 AWG data wires for signal integrity and 24 AWG power wires for reliable power transfer. Clear connector configuration: One end is a SFF8643 male, the other end is a U.2 SFF8639 male plus a 15pin power connector, ensuring a straightforward connection on compatible hardware. Applications and use scenarios Server and data center expansion: Attach a U.2 NVMe or SAS storage array to a host controller that provides a Mini SAS HD 4i interface, enabling expanded storage capacity in servers or storage enclosures. Workstation or workstationclass storage upgrades: Connect U.2 drives to a host with a Mini SAS HD 4i output, enabling flexible data paths for speed storage workloads. Storage enclosure integration: Link a SAS HD based enclosure to a U.2 capable host system for consolidated storage management in data centers or IT rooms. Compatibility and notes This cable is designed for devices using SFF8643 (Mini SAS HD 4i) on one end and SFF8639 (U.2) on the other end, with an integrated 15pin power connector. Ensure your host controller and target drives support the respective interfaces and the power requirements before use.