Features: This product supports the installation of SFF-8639 hard disk on the PCIe NVMe M.2 interface of machine, but the buyer needs to purchase SSF-8654 to SFF-8639 wire separately. SFF8639 single mode hard disk is not supported. It is not supported that the motherboard port of protocol should not be inserted. The hard disk signal line goes straight to the PCIe NVMe M.2 slot of your machine, and the conversion not need to go through the chip, so there is no restriction on the performances of the hard disk! Support 2260 2280 two-position installation (can be cut, please test it before cutting. This product supports PCIe protocol. If your machine M.2 interface supports PCIe, data cable supports (some data cables cut corners and some signal cables is not shielded), then you can run PCIe. Note that failure to support in any of the above three link will cause the hard disk to run less than pcie. Specifications: Component: ABS Size:Approx.80x22mm/3.15x0.31inch Package Includes: 1Pc Adapter Card note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.