1) Note: The SFF-8643 port of the motherboard must be NVME/PCIE protocol to use. SAS protocol is not supported. 2) The cable does not support SAS or hard drives. Hot swapping is not supported. 3) The SFF-8643 to U.2 SFF-8639 cable is specifically used to connect PCIe slots with SFF-8643 ports and SSDs with U.2 SFF-8639 interfaces. 4) The power supply be connected to the computer power supply to power the NVMe SSD at 3.3V 12V. ( power supply must be connected) 5) The cable supports 4x PCIe 3.0 and PCIe 4.0 speeds, and the motherboard needs to support 10 or later. Color: Black Material: Plastic+Copper Wire+Braided Network Cable Package Contents: 1 * SFF-8643 cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.