Features: NVMe procedure Support: This PCIe generation 4 SFF8639 adapter cable is designed for NVMe procedure Storage interfaces, delivering high speed data transfer. Power Supply Requirement: The additional power connector must be properly attached during usage. The data cable transmits information only and requires separate power for the device. Storage Drive Compatibility: Supports both SFF 8639 And U.2/U.3 Format storage drives (excluding single U.3 Format models such as specific manufacturer PM1735), offering versatile expansion possibilities. Motherboard Compatibility: Requires a motherboard with drive Slot that recognizes VMe Storage devices. Some motherboards share resources between Slots and expansion/ ports, allowing only single function at a time. Easy Installation: Features tool less plug and play design for quick setup, allowing users to conveniently expand their computer's storage capacity. Specifications: Component:Plastic Length about 42cm/16.54In 70cm/27.56In Type：PCIe4.0 SFF-8639 U.2 Drive adapter card extension cable Package Includes: 1PC PCIe4.0 SFF-8639 U.2 Drive Adapter card extension cable note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!