Product Description 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 Female Size: 0.5m Material: Copper Package Contents: 1 * Connection Cable 1. The Mini SAS SFF 8654 to U.2 SFF 8639 cable is specifically designed to connect a PCIe slot with an SFF-8654 port and an SSD with a U.2 interface. It delivers high-performance data transfer by upgrading a computer with a U.2 NVMe SSD. The cable can perform 5 times faster than a SATA SSD even when a U.2 connection is not available on the motherboard. Thus, it can be an efficient and productive choice for networks, servers, workstations, external storage systems, and more. 2. The Mini SAS SFF 8654 to U.2 SFF 8639 cable upgrades storage to fast NVMe SSD speeds with a U.2, 4-Lane connection; the NVMe cable with integrated SATA power connects to your computer's power supply for 3.3V 12V input power for an NVMe SSD. 3. The Mini SAS SFF 8643 to U.2 SFF 8639 cable supports all NVMe SSDs; RoHS certified. 4. SFF-8643 COMPATIBLE with cards such as 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.