Product name: double-sided 4-disk NVME PCI-EX 16 split card Support hard drive: M.2 NVME protocol SSD / M.2 PCI-E of the device Support length: 2230/2242/2260/2280 Transmission speed: 4*32Gbps Support system: Win 8/10 system drive-free use (other systems need to install nvme driver to use) Note: This product can run 4 NV ME at the same time, but the motherboard must support PCIE signal splitting. Product Description: 1, please make sure that your motherboard PCIe x16 slot support pcie signal split into four PCIe x4, Please do not buy if you can not use! 2, if you want to group , please be sure to use the same specification of the same model of the same 4 hard disk, so as to the consistency of the hard disk performance. can be grouped into a function is determined by your motherboard, and the adapter card has to do with, not provide technical support. 3, only support 2230 2242 2260 2280 size NVME protocol. Does not support the use of other protocols M.2. Colour:Black Material:PCB+Metal Different batches may have different silk screen printing, which will not affect the use Package Contents: 1 x M.2 NVMe SSD NGFF To PCIE X16 Adapter 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.