Mini SAS SFF 8654 to U.2 SFF 8639 Cable is particularly designed to connect an PCIe slot with SFF-8654 port and SSD with U.2 interface. It provides high-performance data transfer by upgrading a computer with a U.2 NVMe SSD. The Cable is capable of performing 5x faster than a SATA SSD even when a U.2 connection is not available on the motherboard. So it can be an efficient and productive choice for networks, servers, workstations, External Storage Systems and more. Mini SAS SFF 8654 to U.2 SFF 8639 Cable upgrade storage to fast NVMe SSD speeds with a U.2 , 4-Lane connection; NVMe cable with integrated SATA power connects to the computer power supply for 3.3V 12V input power for an NVMe SSD Mini SAS SFF 8643 to U.2 SFF 8639 Cable support all NVMe SSD ; RoHS certified. SFF-8643 COMPATIBLE with cards such as the ASRock U.2 Add-On card, Gigabyte M.2 to U.2-Mini-SAS Add-In Card, ASUS Accessory Hyper Kit Expansion Card M.2 to Mini SAS HD.