This product is suitable for motherboard computers that support PCI-E signal diversion, and can run 4 NVMe hard drives at the same time (without signal diversion, the motherboard can only run SSD1 interface disks)<br> Support 4-port M.2 NVME protocol, PCI-E4.0 X16 is backward compatible with PCI-E3.0<br> The PCI-E X16 interface can improve the read and write performance of the hard drive, achieve high-speed expansion and mission, and enable the computer to give full play to its performance, thereby increasing the operating speed<br> High-speed mission: M.2 NVME to PCIe 4.0 adapter ensures high-speed data mission, thereby improving the overall performance of the PC<br> Additional functions: As an add-on card, it provides convenience and flexibility, allowing you to expand the storage capacity of the PC, easy to install<br> Product name: PCI-E4.0 X16 1 to 4 NVME expansion card<br> Input interface: PCI-E X16<br> Output interface: 4*NVME M.2 (M-Key)<br> Supported devices: M.2 NVMe SSD hard disk<br> Supported systems: for WIN7, 8, 10, 11, Linux, Mac<br> Colour:black<br> Material:PCB<br> Due to different product batches, the appearance may vary, which does not affect the use<br> Package Contents:<br> 1 * Expansion Card kit<br> Only the above package content, other products are not included.<br> 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.