Connect and Perform The LINKUP Internal SAS SFF-8643 to U.2 SFF-8639 with SATA Power Cable makes it possible to upgrade a computer to U.2 NVMe SSD speeds. Capable of performing 5x faster than its SATA SSD counterparts, these cables allow the connection of U.2 NVMe SSDs even when a U.2 port is not available. Heavy-duty flexible cables with mesh sheath and the high-quality individual laneway shielding provides secure, reliable connections. Available in 2ft, 3ft, 4ft, and 5ft lengths. Note - M.2 to U.2 adapter required to use a M.2 SSD. Cable Specifications - Internal Connector A: 1 x 36-pin HD Mini-SAS SFF-8643 male with latch - Internal Connector B: 1 x 68-pin U.2 SFF-8639 male - Power Connector: 15-pin SATA receptacle - RoHS compliant WarrantyLimited 1-Year Warranty and premium online support.