The adapter for the interface to the interface conversion, without going through any chip, does not affect the performance of the hard disk. This adapter only supports M.2 NGFF interface, which is the PCIe x4 transfer protocol SSD and PCIEx 2 transfer protocol SSD (make sure to understand the hard disk transfer protocol, buy the wrong is not used). This product is inserted into the motherboard PCIE X4 or PCIE X8 or PCIE X16 slot, which is the motherboard's graphics card slot, do not mistake insertion PCI slot, the error may damage the motherboard, adapter and your solid-state hard drive!